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This is a list of Java Edition 1.17 development versions.

20w45a

20w45a is the first snapshot for Java Edition 1.17, released on November 4, 2020,[1] which adds the first Caves & Cliffs features.

Additions

Blocks

Amethyst Bud
  • Grows from budding amethyst, which is found in amethyst geodes.
  • Starts out small, but grows into medium after a while, large after even more time and eventually becomes an amethyst cluster.
  • Unlike crops, each growth stage is a separate block instead of a block state.
  • Drops nothing if broken in its premature stages, even with Silk Touch.
Amethyst Cluster
  • The final, mature stage of the amethyst bud, which grows from budding amethyst in amethyst geodes.
  • Drops amethyst shards if broken, in an amount affected by Fortune, but can also be picked up with Silk Touch.
  • Emits a light level of 5.
Block of Amethyst
  • A block found in amethyst geodes.
  • Unlike the budding amethyst, the block of amethyst can be obtained when mined.
  • Can also be crafted with 4 amethyst shards.
Budding Amethyst
  • Generates amethyst crystals on any of its sides (if next to a water source block or air, and if the side is not against another block), in a given time.
  • Cannot be obtained when mined, even with Silk Touch, and does not drop anything.
  • Breaks immediately if pushed by a piston or sticky piston.
    • Cannot be pulled by sticky pistons.
  • Generates in amethyst geodes.
Calcite
  • An off-white stone that generates in geodes, between tuff and amethyst.
Candles
  • Crafted with honeycomb and string.
  • Come with 16 dyed types and a yellowish non-dyed type.
  • Can be lit by any item that produces fire.
  • Up to 4 can be placed in a single block, similar to sea pickles, for a maximum light level of 12.
    • Only candles of the same color can be placed on the same block.
  • Only one can be placed on an uneaten cake and lit.
    • If any of the cake is consumed the candle pops off.
  • Can be placed, but cannot be lit, underwater.
Copper Block
  • Can be crafted with 9 copper ingots, and can also be crafted back into 9 copper ingots.
  • Oxidises and changes texture to a turquoise-green over time.
  • Can be stopped from oxidizing by combining it with a honeycomb to create a waxed copper block.
  • Can be crafted into cut copper.
Copper Ore
  • Generates randomly underground in small blobs, but this has been confirmed to be a placeholder.
  • Has the same rarity as iron.
  • Generating starts at the same minimum level(s) as iron.
  • Can be smelted into a copper ingot.
Cut Copper
  • Can be made into stair and slab variants.
  • Oxidises and changes texture over time.
  • Can be stopped from oxidizing by combining it with a honeycomb to create waxed cut copper.
Cut Copper Slab
  • Oxidises and changes texture over time.
  • Can be stopped from oxidizing by combining it with a honeycomb to create a waxed cut copper slab.
Cut Copper Stairs
  • Oxidises and changes texture over time.
  • Can be stopped from oxidizing by combining it with a honeycomb to create waxed cut copper stairs.
Lightning Rod
  • Can be crafted with 3 copper ingots.
  • Nearby lightning strikes within a 16 block radius get redirected to the lightning rod.
  • Gives off a redstone signal with a strength of 15 if hit by lightning.
  • Can be activated directly by throwing a trident with Channeling at it during a thunderstorm, though this does not produce a redstone signal.
Tinted Glass
  • A black variant of glass that does not let light pass through.
  • Can be crafted with 4 amethyst shards and a glass block.
    • Stained glass cannot be used to craft tinted glass.
  • Drops itself if mined without Silk Touch or even by hand, unlike glass.
Tuff
  • A grayish stone that composes the outer layer of amethyst geodes.

Items

Amethyst Shard
  • Obtained from breaking amethyst clusters.
  • The amount dropped can be increased with the Fortune enchantment.
  • Can be used to craft tinted glass, blocks of amethyst and a spyglass.
Bundle
  • Crafted with 2 string and 6 rabbit hide.
  • Used to store other items (except shulker boxes) inside of it.
  • Is able to hold different types of items inside of it.
    • Holds the equivalent of one single stack of items.
      • Items with smaller stacks, such as ender pearls, take up more room in a bundle, and non-stackable items take up the whole bundle.
  • The bundle's contents can be opened by pressing use while holding it.
Copper ingot
  • Obtained by smelting copper ore.
  • Used to craft copper blocks, lightning rods and spyglasses.
Spyglass
  • Crafted with 2 copper ingots and an amethyst shard.
  • When used, it zooms in on wherever the player is looking, but limits their view to a small circle.
    • The overlay that limits the view can be removed with a resource pack or by pressing F1.
  • There is a unique animation for using the spyglass, which is visible in third person perspective.

World generation

Amethyst Geodes
  • A new feature found uncommonly underground (can rarely appear exposed to the surface close to sea level).
  • Contains blocks of amethyst and budding amethyst blocks, which are encased in a shell of calcite and tuff.
    • Also generates with a small air pocket nearby which may open into the geode.
  • Generally generates at or below sea level. (y = 63)
  • Most commonly generates at lower levels. (y = 0 to y = 40)
  • Overrides standard caves and ravines, but is overridden by abandoned mineshafts.
  • Currently has a high generation rate, presumably for testing purposes which was also done with ruined portals before.

General

Loot tables
  • New functions: set_banner_pattern
    • Sets tags needed for banner patterns. Parameters:
      • patterns – list of pattern objects:
        • pattern – name of pattern (square_bottom_left, bricks, etc.)
        • color – name of color (light_gray, etc.)
      • append – if true, new elements will be appended to existing ones instead of replacing
Tags
  • Added the candle_cakes block tag.
    • Contains all 17 types of candle cake.
    • If the player puts a candle on a cake, and keeps clicking the candle on the cake, the candle will be duplicated.
    • Blocks in this tag are considered candle cakes and can be lit, if they have the lit block states set to false.
  • Added the candles block and item tags.
    • Contains all 17 types of candles.
    • Blocks in this tag are considered candles and can be lit, if they have the lit, and waterlogged block states and both are false.
    • Cakes use this tag to determine if a candle item can be placed on it or not.
  • Added the cauldrons block tag.
    • Contains cauldrons, water cauldrons, and lava cauldrons.
    • This tag is used in certain pathfinding processes.
  • Added the crystal_sound_blocks block tag.
    • Contains amethyst blocks and budding amethyst.
    • Blocks in this tag play the "amethyst block chime" sound repeatedly for a short amount of time after being stepped on, gradually decreasing in volume.
  • Added the ignored_by_piglin_babies item tag.
    • Contains leather.
    • Baby piglins do not attempt to pick up items in this tag. Adult piglins are unaffected. Baby piglins still follow the other rules adult piglins follow.
      • If an item is in this tag while simultaneously being recognized as a wanted item by piglins, this tag takes precedence.
  • Added the piglin_food item tag.
    • Contains raw and cooked porkchop.
    • Piglins can eat items in this tag.
      • Eating refers to the piglin seeking out and picking up an item without appearing in its inventory, thus vanishing.

Changes

Blocks

Cauldrons
  • Can now be filled with lava.
    • Lava filled cauldrons can damage players and mobs inside of it.
    • Lava filled cauldrons give off a redstone comparator signal of strength 1.
  • Have been split into normal, water and lava cauldrons.
Grass Path
  • Renamed to "Dirt Path", as per Bedrock Edition.
    • The block ID has also been changed to dirt_path.
  • Can now be made with dirt, coarse dirt, mycelium, and podzol.
Pistons
  • Particles now appear if a block is broken by a piston.
    • Sounds, however, do not.[2]
All rails
  • Are now able to be waterlogged.
  • No longer break when contacted by water.
Water
  • Flowing water no longer breaks rails.
Shulker boxes
  • Now mimics the opening and closing of a shulker.
    • Unlike its mob counterpart, it does not elevate the player when they are standing on it.
Cakes
  • Have a variation called "Candle Cake".
    • Can be created by using a candle on an uneaten cake.
    • The candle on the cake comes with 17 colors, depending on the color of the candle used to create it.
    • Pop out the original candle when any of the cake is eaten.

Items

Firework Rockets
  • Simple firework rockets with one gunpowder can now be crafted using the recipe book.

Mobs

Shulkers
  • If a shulker is hit by another shulker's projectile, it now has a chance of spawning a new shulker.
    • Shulkers are more likely to spawn new shulkers when there are fewer other shulkers nearby.

Non-mob entities

Experience Orbs
  • Now sometimes merge when in large quantities, to improve performance.
    • Merging does not affect the amount of experience gathered from collecting the merged orbs.
  • No longer follow dead players.
Minecarts
  • Can now move in water, but move considerably slower than they do on land.

General

Data and Resource Packs
  • Changed the resource pack version number from 6 to 7, as the following have been changed:
    • Drowned texture mirroring has changed.[3]
    • Slots for the game mode selector are now 26 pixels instead of 25.
  • Split the pack_version number into separate resource and data pack versions; the data pack version remains at 6.
Dedicated servers
  • A dedicated server can enforce custom resource packs by setting require-resource-pack in server.properties. When this option is used, players will be prompted for a response and will be disconnected if they decline the required pack.
Entity storage
  • Entities have been extracted from main (terrain) chunks and are now stored in separate entities directory (similar to POI storage). Those new files are still region files with NBT.
Libraries
  • The game now uses javabridge 1.1.23 instead of 1.0.22.

Fixes

53 issues fixed
From released versions before Java Edition 1.17
  • MC-98219 – Experience orbs follow dead players.
  • MC-108469 – Chunk-wise entity lists often don't get updated correctly (entities disappear).
  • MC-112147 – Lava burning items or XP orbs sound muted when "Friendly Creatures" slider is turned off.
  • MC-126997 – Undyed shulker box still uses cauldron's water when right clicking.
  • MC-127201/replaceitem makes quite an obnoxious sound, which is not heard by the person whose items are being replaced.
  • MC-127692 – Experience build up in furnace when using a hopper which can cause severe lag.
  • MC-130449 – Cartographer villager freezes or crashes the game when unlocking explorer maps.
  • MC-130584 – When a structure loads, water sources in the structure spread into waterloggable blocks.
  • MC-133691 – Blocks cannot be placed normally on a full cauldron.
  • MC-135552 – Dead entities are saved to chunk.
  • MC-136497 – XP orbs causing severe lag.
  • MC-141034taiga_fisher_cottage_1 is filled with water.
  • MC-151270 – Teleporting an entity from another dimension can cause UUID duplication in entity sections.
  • MC-160994 – Blocks broken by pistons do not display breaking particles.
  • MC-161592 – Entities lose their scores when switching dimensions.
  • MC-168398 – Guardian beam is darker.
  • MC-169900 – Incorrect jigsaw setting in snowy_small_house_8.
  • MC-169945 – Skeletons do not burn in minecarts while being exposed to daylight.
  • MC-170653 – Fireworks fired from a dispenser get stuck in the air when removing the block they crashed into.
  • MC-171852 – Putting item in a spectator's hand plays sound "Gear equips" for other players.
  • MC-174685 – Drowned arm texture is reversed by the model.
  • MC-175959 – One door is open in taiga_shepherds_house_1.
  • MC-177539 – When flattening a grass block into a path immediately after the grass block grows from dirt, the shovel sound doesn't play.
  • MC-177622 – One log in taiga_butcher_shop_1 seems to be misrotated - causing the side roof to look asymmetrical.
  • MC-177624 – Entrance in snowy_medium_house_2 is asymmetrical.
  • MC-181889 – Equipping sound plays when mobs picking up non-armor items.
  • MC-185357 – Removing a plant from a flower pot still plays generic armor equipping sound/shows Gear equips in subtitles.
  • MC-185359 – Using a bucket in Survival mode still plays generic armor equipping sound/shows Gear equips in subtitles.
  • MC-185360 – Milking a mooshroom for stew still plays armor equip sound/shows Gear equips subtitle.
  • MC-188044 – Using a banner on a filled cauldron plays hand animation.
  • MC-189565 – Some entities do not render inside of spawners and producing error log spam in console, potentially causing lag.
  • MC-190896 – Lag when opening a shipwreck chest containing buried treasure map.
  • MC-192594plains_stable_1 misplaced blocks.
  • MC-192629plains_stable_2 misplaced blocks.
  • MC-192876 – Misplaced trapdoor on taiga_decoration_6.
  • MC-192879 – Wall incorrectly placed on certain taiga houses.
  • MC-192930 – Zombies picking up items play the gear equipping sound and subtitle.
  • MC-193071 – Eating food items that return empty containers still play gear equipping sound.
  • MC-194685 – Collecting water from cauldrons with glass bottles in Creative mode is still inconsistent.
  • MC-194686 – Collecting water from cauldrons with buckets in Creative mode is still inconsistent.
  • MC-195125plains_animal_pen_1 misplaced block.
  • MC-195126plains_animal_pen_3 misplaced blocks.
  • MC-195351 – Comparator in compare mode can schedule unneeded tileticks.
  • MC-196542 – Small cleanup for skylight propagation code.
  • MC-196638 – Placing an armor stand logs warning "Trying to add entity with duplicated UUID".
  • MC-197009 – Referencing empty item tag in recipe can crash client.
  • MC-197140 – Jack o'lantern does not come after carved pumpkin in Creative inventory.
  • MC-197179 – Baby piglins that pick up leather do not despawn, cluttering the Nether with unnecessary baby piglins.
  • MC-197524 – Border chunks do not enforce neighbors to be loaded, causing light updates to get stuck.
  • MC-198129ReplaceBlobsFeature changed from 1.16.1 to 1.16.2, affecting Basalt Delta generation.
  • MC-198414 – If the angle in /spawnpoint is set to ±infinity, and the player dies, it will kick the player, and upon rejoin will crash the game.
  • MC-198807 – Making piglins and piglin brutes angry at certain entities (like dropped items) crashes the game.
  • MC-202246 – Drowned navigation causes memory leak/performance degredation.

20w46a

20w46a is the second snapshot for Java Edition 1.17, released on November 11, 2020,[4] which adds powder snow among other changes.

Additions

Blocks

Powder snow
  • Entities that walk over it sink into it.
  • Can be picked up and placed with a bucket.
  • Leather boots can be worn to prevent entities from sinking into powder snow blocks.
    • Players can still crouch to descend with leather boots. Wearing leather boots also allows powder snow to be "climbed", like water or scaffolding.
  • Entities in powder snow slowly freeze.
    • Once frozen, damage is slowly dealt to the entity.
    • Wearing leather armor is intended to slow the freeze effect, and a full set of leather armor is intended to stop the freeze effect. However, this feature was not implemented properly.[5]

Items

Powder snow bucket
  • Using a bucket on powder snow creates a powder snow bucket.
  • Powder snow buckets can be used to place powder snow.
  • Powder snow buckets can also be filled from cauldrons filled with powder snow.

Command format

/item
  • Modifies the inventory of a block or entity.
    • This command has three forms:
      • /item <target> replace <item stack> [<count>] – same as old /replaceitem
      • /item <target> modify <modifier> – modifies item (without copying).
      • /item <target> copy <source> [<modifier>] – copies item for source to target(s), optionally applying modifier
    • Possible sources and targets: entity <selector> <slot> or block <x> <y> <z> <slot>
    • For example, /item block ~ ~ ~ container.0 copy entity @s enderchest.0 will copy first item from player's enderchest to first slot of container player is currently standing on.
Item modifiers
  • Reuse functions syntax of a loot table to describe item modification in /item command.
  • The function part of loot tables can now be defined as separate data pack resource in item_modifiers directory.
    • Such files can contain a single function (i.e single JSON object) or an array of functions.

Gameplay

Loot tables
  • Rolls, set_damage, and possibly other parameters now require "type:uniform" (or other valid values for "type") when using min-max for numbers. set_count has had the same requirement for a few versions.
  • New condition: value_check
    • Checks range of value.
    • Parameters:
      • value – see "New value providers" section (currently combination of random generators and score)
      • range – min/max range
  • New function: set_enchantments
    • Modifies enchantments on item.
    • Parameters:
      • enchantments – map of enchantment id to level value (can be score or random number)
      • add – if true, change will be relative to current level. If false, level will be replaced with current value (default behavior)
  • New value providers: score
    • Returns scaled scoreboard value.
    • Parameters:
      • score – scoreboard name
      • target – same as target in score predicate
      • scale – scaling factor (float)

General

Particles
  • Added a new particle type: snowflake.
Tags

Changes

Blocks

Amethyst bud
  • Can now be obtained using a silk touch pickaxe.
Banners
  • The unused "base" pattern has been renamed to the "field" pattern and given proper translation strings (its ID is still "base").
Cauldrons
  • Can now be filled with powder snow during snowfall.
  • Using a bucket on a cauldron filled with powder snow empties the cauldron and creates a powder snow bucket.
  • Can also be filled with powder snow by using a powder snow bucket on it.
Copper block
Dispenser
Lapis lazuli block
  • Renamed to "Block of Lapis Lazuli".
Lightning rod
  • The range of attracting lightning has been doubled.
Structure block
  • Default mode of structure blocks is now "Load". "Data" is now hidden by default.
  • "Data" can be accessed by clicking the mode button while holding the Alt key.

Items

Bundle
  • Now has a GUI when hovering over it.
    • Shows contained items in its GUI's inventory slots when hovering over it.
Pufferfish
  • The strength of the poison effect has been decreased from IV to II.[6]
Spyglass

World generation

Biomes
  • Biome-specific sky colors now blend more smoothly.

Weather

Snowfall

Command format

/replaceitem

Gameplay

Death messages
  • Added death messages for freezing:
    • "<player> froze to death".
    • "<player> was frozen to death by <entity>".
Loot tables
  • Loot tables can now access scoreboard values by UUID.
  • Loot table values inside random number generators can now be nested.
  • Changed condition: score
    • entity parameter has now been replaced with target. It can either contain value from old entity field (like this) or be an score holder name in form {"name": "..."}.
  • Changed function: set_damage
    • This function now has add parameter. If true, change will be relative to current damage. If false, damage will be replaced with current value (default behavior)
  • Changed function: set_count
    • This function now has add parameter. If true, change will be relative to current item count. If false, item count will be replaced with current value (default behavior)
  • Changed function: copy_nbt
    • source parameter can now be set to {"storage": <namespaced id>}, to access command storage.

General

Data packs
Menu screen
  • Buttons tied to a set of values can now be scrolled through.
  • Clicking ⇧ Shift on a menu button changes it to the previous value.
  • The debug mode can now only be accessed by holding Alt instead of ⇧ Shift while clicking on the world type button.
Tags
Textures
Translation strings
  • The "World Type" string no longer contains a colon (":"). The colon is still visible in-game, however.
  • Changed "Use VSync" to "VSync".
  • Removed the unused string for enabling VBOs, "Use VBOs".
  • Added strings, "Mode", "Type", "Triggering", and "Track output". These are read out by the narrator for buttons in the command block UI.

Fixes

34 issues fixed
From released versions before Java Edition 1.17
  • MC-2490 – TNT animation ends at 80 ticks, ignores fuse length changes.
  • MC-53518 – Endermen don't attack endermites spawned using spawn eggs or /summon.
  • MC-80468 – Inconsistency between block names.
  • MC-99259 – As of 1.9, the wither health bar doesn't go up during spawn.
  • MC-106690 – Servers sends SPacketMaps packets even if the map data did not change.
  • MC-110903 – Cannot remove horse saddle using /replaceitem.
  • MC-143821 – Using an empty map in creative mode can create an additional map with ID 0.
  • MC-147729 – Crafting via the recipe book can delete items if picking up items while crafting.
  • MC-162910 – Additional map is created when using an empty map in Creative in a newly created world.
  • MC-182954 – "block.minecraft.banner.base.<color>" displays raw translation string (is untranslated).
  • MC-183771 – Gamemode switcher icons in the F3+F4 menu are not centered.
  • MC-183917 – Min and max are both required in entity_scores condition.
  • MC-185605 – Kelp generates on top of magma blocks.
  • MC-188044 – Using a banner on a filled cauldron plays hand animation.
  • MC-188448 – Food pops off of campfire when extinguished.
  • MC-189482 – LAN World screen buttons are selected in the wrong order when using Tab ↹.
  • MC-195461 – The upper part of potted cactus/bamboo texture is not visible if there is a half block above it.
  • MC-196425 – "Off" is not completely capitalized for the Distortion Effects and FOV Effects sliders, which is inconsistent with other sliders.
  • MC-197276 – Pufferfish gives Poison IV instead of II.
  • MC-198514 – Creating a superflat world with nothing but air crashes the game.
  • MC-198725 – Crash when clicking "Presets" after setting the superflat preset with a non-existent biome.
From the previous development version
  • MC-203551 – Putting lava in a cauldron makes the water bucket sound.
  • MC-203562 – Shulker boxes animate when shulkers do.
  • MC-203574 – Decorations don't generate in the Nether.
  • MC-203621 – Unable to pick up experience orbs.
  • MC-203622 – Arm when using spyglass aligned wrong on Multiplayer.
  • MC-203631 – Amethyst buds do not drop themselves with silk touch.
  • MC-203643 – Command modified bundle has a bigger progress bar than a slot.
  • MC-203644 – Cats & ocelots are missing one of their legs.
  • MC-203646 – Some mobs won't despawn when switched to peaceful.
  • MC-203648 – The armor stand model floats above its base.
  • MC-203746 – Levitation particles go on forever when killed by a levitating creeper.
  • MC-203880 – Floating creepers/creeper with no AI.
  • MC-204861 – Datapack format potential conflicts.

20w48a

20w48a is the third snapshot for Java Edition 1.17, released on November 25, 2020,[8] which adds dripstone blocks and pointed dripstone.

Additions

Blocks

Dripstone Block
  • Decoration block.
  • Does not generate anywhere currently, is only available from the creative inventory.
Pointed Dripstone
  • Can be placed on the floor or ceiling, creating stalagmites or stalactites respectively.
    • Can be combined to form longer stalactites and stalagmites.
  • Stalagmites break if not attached to something below, and hurt entities which fall on top of them.
    • Enemies that fall on the stalagmites deal three times more fall damage
  • Stalactites fall if unsupported, and hurt entities they fall on.
    • Damage is relative to height: For example, one falling from 2 blocks deals 2♥ of damage, and one falling from 3 blocks deal 4♥♥ of damage.
    • They drip water or lava into cauldrons if a source block is placed above the stalactite, and gradually fill the cauldron. Water drips even without any water above the block, but does not fill the cauldron.
  • Thrown tridents break pointed dripstone.

Command format

Gamerules
  • freezeDamage
    • Whether entities take damage from freezing inside of powder snow.

General

Tags
  • Added new freeze_immune_wearables item tag.
    • Contains leather boots, leather pants, leather tunic, and leather cap.
    • Having an item in this tag in an armor slot prevents players from freezing.
Particles
  • Added new particle types: dripping_dripstone_lava, dripping_dripstone_water, falling_dripstone_lava, and falling_drip_water.

Changes

Blocks

Budding Amethyst
  • The texture has been changed. Has a more prominent "X" in its center.
Block of Amethyst
  • The texture has been changed. It is now slightly less busy, striking a middle ground between the 20w45a and 20w46a textures.
Candles
  • Can now only be placed on solid surfaces.
    • If the block a candle is placed on is broken, the candle stays floating.
Cut Copper Slabs
  • Crafting all variants of cut copper into slabs now gives 6 slabs instead of 4.
Powder Snow
  • Players in creative mode can now freeze.

Items

Bundle
  • Now show fullness as a number when advanced tooltips are enabled.
  • Right-clicking a bundle in the inventory now empties one item from the bundle.
  • Using a bundle now throws out its entire content into the world.
Candle
  • The item textures have been changed to only have one candle.
Clock
  • The texture has been changed. The gold is now more vibrant and better matches other instances of gold in the Texture Update texture.
Compass and Lodestone Compass
  • The texture has been changed. The iron is now more vibrant and better matches other instances of iron in the Texture Update texture.
Leather armor
  • Wearing any piece of leather armor now prevents freezing entirely.
Spyglass
  • The spyglass is now a 3D model instead of a flat sprite.
  • Using the spyglass now better anchors it to the player's "eye" when viewed in 3rd person.

Gameplay

Recipe Book
  • Some recipe-unlocking advancements had criteria names changed.
  • The chiseled nether bricks recipe is now unlocked by having a nether brick slab instead of a nether bricks block.

General

Tags
  • The snow_step_sound_blocks block tag was renamed to inside_step_sound_block.

Fixes

28 issues fixed
From released versions before Java Edition 1.17
  • MC-3615 – Lava and water are completely transparent at certain height levels
  • MC-8017 – Arrows and tridents are not being slowed down by webs but eggs and snowballs are
  • MC-173745 – Lower part of end gateway block beam renders incorrectly
  • MC-176614 – Swimming and doing certain actions make the player look very odd/does not have animations for swimming + doing certain actions
  • MC-198864 – World border does not render below y0 / above y255
  • MC-200696 – Clock's texture does not match the new gold color pallete
From the Java Edition 1.17 development versions
  • MC-203602 – Spyglass animation is wrong when swimming
  • MC-203645 – Spyglass wobbles when walking while in use
  • MC-203824 – Weird Hand animation when attacking and using spyglass at the same time
  • MC-203925 – Items inside of a bundle disappear if you empty the bundle in the inventory when in Creative mode while the inventory is full
  • MC-203951 – The elder guardian particle moves when an elder guardian moves
  • MC-204323 – Inconsistency: Crafting copper blocks into slabs only yields 4 slabs instead of 6
  • MC-204424 – Using a spyglass while gliding with an elytra points the spyglass down in third person view
From the previous development version
  • MC-205041 – Full leather armour does not prevent freezing damage
  • MC-205069 – Powdered snow doesn't give you frozen effect in creative mode
  • MC-205072 – Snow Ambient Effect sometimes don't show correctly on the edge of a Powder Snow Block
  • MC-205145 – Compass with nothing to point to will spin very rapidly when in bundle.
  • MC-205197 – Creating a map from an empty map no longer plays a sound
  • MC-205220 – Cannot manipulate horse.saddle using /item command
  • MC-205228 – Player arms still move when using a spyglass while flying
  • MC-205269 – Chest closing sounds desynced with closing animations
  • MC-205321 – Item modifiers that change the item type don't work on entities
  • MC-205445 – The Fabulous graphics warning is shown at the wrong time
  • MC-205454 – Bundles can be used to duplicate items in the crafting grid
  • MC-205492 – The 'Include entities' option in the structure block UI is the opposite of the actual behavior
  • MC-205567 – TNT flashes are translucent once again
  • MC-205627 – Item modifiers that change the count to 0 don't completely remove the item
  • MC-206058 – /item modify doesn't visually update the model of an item in an item frame

20w49a

20w49a is the fourth snapshot for Java Edition 1.17, released on December 2, 2020,[9] which adds sculk sensors, the dripstone caves biome, and the ability to expand the world height limit.

Additions

Blocks

Sculk sensor
  • A new redstone component.
  • Detects vibrations, and emits a redstone signal.
  • Will emit a different strength if connected to a comparator, and the signal strength is based on the vibration's frequency.
  • Vibrations can be occluded using wool blocks.
  • Can only be obtained via the Creative inventory or commands such as /give.

World generation

Dripstone caves
  • A new underground biome.
  • Made up of primarily dripstone blocks and stone, with large clusters of dripstone blocks hanging from the ceiling, pointed dripstone on the floor and ceiling and many pools of water.
  • Does not generate naturally in normal worlds, and can only be generated using buffet worlds with "Dripstone caves" selected as the source biome or using custom world.

Gameplay

Death messages
  • Added death messages for being skewered by a falling stalactite:
    • "<player> was skewered by a falling stalactite"
    • "<player> was skewered by a falling stalactite whilst fighting <entity>"
Particles
  • New particle types: vibration and dust_color_transition

General

Tags
  • Added the dripstone_replaceable_blocks block tag.
    • Contains the base_stone_overworld block tag and dirt.
    • Used in dripstone generation to determine what dripstone can replace and what pointed dripstone can generate on.
  • Added the occludes_vibration_signals block tag.
    • Contains the wool block tag.
    • Blocks in this tag will prevent sculk sensors from hearing vibrations if the block is between the sculk sensor and the vibration.
  • Added new game_events tag type.
  • Added the ignore_vibrations_stepping_carefully game event tag.
    • Contains the step, falling, and shooting projectile events.
    • Game events in this tag will be ignored by sculk sensors if the source entity is sneaking.
  • Added the vibrations game event tag.
    • Contains every game event.
    • Game events in this tag will trigger sculk sensors.

Changes

Blocks

Pointed Dripstone
  • When in a dimension with ultrawarm set to true, such as the Nether, downwards facing dripstone will create lava particles instead of water particles.

Items

Bundle

Gameplay

Absorption effect
  • The yellow absorption hearts will now stay yellow if the player has the Poison or Wither effects, instead of appearing empty.
Freezing
  • Frozen hearts now appear in hardcore mode.
    • However, they appear the same as normal frozen hearts.

General

Custom dimensions
  • Added height and min_y variables to dimension types, allowing for the height limit to be increased in custom world settings.
    • The void now starts 64 blocks below min_y.
Servers
  • Removed the max-build-height server setting.

Fixes

27 issues fixed
From released versions before Java Edition 1.17
  • MC-18880 – The Absorption effect has no texture for poison/wither hearts (appears empty instead)
  • MC-46650 – When flying through blocks in spectator mode in F5, the camera zooms in and out a lot
  • MC-201840 – Optional function tags sometimes don't run even when the tag exists
From the Java Edition 1.17 development versions
  • MC-203797 – Placing or removing a block over the void causes a DecoderException on servers
  • MC-204314 – Double copper slabs only drop a single slab when mined
  • MC-205043 – Absorption hearts appear broken when taking freezing damage
  • MC-205096 – Hardcore hearts lose all color when player is taking freeze damage
  • MC-205391 – Waxing cut copper does not prevent it from oxidising
  • MC-205629 – Unused sign cache when rendering signs
From the previous development version
  • MC-206553 – Pointed Dripstone creates water particles in the Nether
  • MC-206563 – Pointed dripstone is not connected to the player's hand
  • MC-206578 – Large pillars of stalactites don't fall when the block above is removed
  • MC-206583 – Cauldrons below stalactites at least 2 blocks tall will not fill up
  • MC-206591 – Setting any floating block to a pointed dripstone, causes the replaced block to drop as an item
  • MC-206594 – Large stalactites falling occasionally do not drop all of their pointed dripstone items
  • MC-206606 – Frustum stage of stalactites negates fall damage
  • MC-206613 – Pointed Dripstone duplicates when the block it was attached to is removed
  • MC-206615 – Pointed dripstone's hitbox can extend further than a block, causing nearby stalactites to not be able to fall
  • MC-206642 – Stalactites destroy items they fall on, however stalagmites don't
  • MC-206643 – When a dripstone's hitbox extends into the space of another block, the area that extends into said block cannot be targeted
  • MC-206669 – Inconsistency between dripstone and non-mob entities
  • MC-206682 – Floating dripstone tips are sometimes left behind from large dripstone pillars
  • MC-206691 – Pointed dripstone replaces items with pointed dripstone items
  • MC-206711 – Coding error at net.minecraft.world.entity.Entity.resetPos()
  • MC-206790 – Waterlogged dripstone does not update
  • MC-206878 – Pointed dripstone attached to a piston is not removed as the piston extends
  • MC-206961 – Flashing frozen hearts use the poisoned absorption heart texture

20w51a

20w51a is the fifth snapshot for Java Edition 1.17, released on December 16, 2020, which adds axolotls, a gamerule to control when night is skipped when sleeping, makes changes to the sculk sensor, and fixes bugs.[10] This was the last snapshot released in 2020.

Additions

Items

Bucket of Axolotl
  • Obtained by right-clicking on an axolotl while holding a water bucket.
Spawn Egg
  • Added axolotl spawn eggs.

Mobs

Axolotls
  • Do not spawn naturally.
  • Are amphibious.
    • Will dry out and start taking damage after 5 minutes of being out of water.
  • Can be caught using a water bucket.
  • Are passive towards players.
  • Can be bred using tropical fish or buckets of tropical fish.
  • Come in five different colors: yellow, brown, white, pink, and blue.
    • Blue axolotls are very rare, with a 11200 chance of spawning.
  • May play dead when damaged, receiving Regeneration I.
  • Attack drowned, guardians, squid and fish.
    • Are always hostile to fish and squid, and hostile to drowned and guardians only when "tempted" by a player holding tropical fish.

Command format

/gamerule playersSleepingPercentage
  • Controls what percentage of players must sleep to skip the night.
  • When set to 0 or a negative value, a single player is sufficient to skip the night, and night is skipped immediately without the falling asleep transition.
  • When set over 100, the night cannot be skipped.
  • Set to 100 by default.

General

Tags
  • Added the axolotl_tempt_items item tag.
  • Added the occludes_vibration_signals item tag.
    • Contains the wool item tag.
    • As thrown entities, items in this tag do not trigger vibrations.
  • Added the axolotl_always_hostiles entity type tag.
    • Contains tropical fish, pufferfish, salmon, cod, and squid.
    • Axolotls are always hostile towards entities in this tag.
  • Added the axolotl_tempted_hostiles entity type tag.
    • Contains drowned and guardians.
    • Axolotls are hostile towards entities in this tag if they have been tempted.

Changes

Blocks

Sculk sensor
  • "Eating Start" has been removed as an event.
  • Walking on wool no longer causes vibrations.
  • Throwing wool as an item on the ground no longer causes vibrations.
  • Sculk sensors are now silent while waterlogged.

Items

Bundles
  • When destroyed as an entity, it drops the items it currently has.
  • Changed interface:
    • Now shows two empty slots when not full, and a X when full.
    • The first item in a bundle is now highlighted.
Shulker boxes
  • Like bundles, they drop their items when destroyed as entities.

General

Resource packs
  • Bundle icons are now a separate texture.
Tags
  • Removed the eating_start game event from the vibrations game event tag.

Fixes

15 issues fixed
From released versions before Java Edition 1.17
  • MC-149799 – When a crossbow is loaded and in the offhand, you do not see it anymore if you carry an item in the main hand.
  • MC-176615 – It is possible to destroy netherite items with lava by putting them inside a container.
  • MC-207125 – Loaded crossbow in offhand does not show breaking block hand animation.
  • MC-207405 – Nether stars can be blown up while being inside of a bundle/shulker box.
  • MC-208082 – Game stalls when any message is displayed in chat while playing with an expired session.
From the Java Edition 1.17 development versions
  • MC-203563 – Cake appears eaten for a split second when putting a candle on it.
  • MC-203568 – Trying to put a candle onto a candle cake duplicates the candle.
  • MC-204058 – Placing a candle on a cake causes hunger display desync.
  • MC-204146 – Netherite can burn whilst inside of a bundle.
  • MC-205057 – Bundle inventory preview is off-center inside of the tooltip box.
  • MC-205212 – Desync when putting a candle on a cake in Survival mode.
  • MC-206721 – The empty slot in the bundle tooltip should always be at the top left position.
From the previous development version
  • MC-207316 – Wool item entities trigger Sculk Sensors.
  • MC-207323 – Dripstones that extend to y level 0 don't fall.
  • MC-207404 – Walking on wool triggers sculk sensors.

21w03a

21w03a is the sixth snapshot for Java Edition 1.17, released on January 20, 2021, which adds glow squids, glow ink sacs, glow lichen, glow item frames, and fixes bugs.[11] This is the first snapshot to be released in 2021.

Additions

Blocks

Glow Item Frames
  • Placeable entities which appear to glow.
  • Do not affect the light level, only appearing as if lit up themselves.
  • Items placed inside also glow.
  • Crafted using an item frame and a glow ink sac.
  • Includes application to maps.
Glow Lichen
  • A naturally occurring light source found rarely in caves, growing on any face of a block.
  • Has a light level of 7.
  • Obtained with shears, otherwise breaks.
  • Does not spread naturally, although bone meal can be used to spread it.
    • It spreads to adjacent spaces horizontally, up to 4.
  • Can be waterlogged.
  • Unlike vines, it does not pop off when underwater, and is not climbable.
  • Up to 6 can be put on the same block space, merging into one block.

Items

Glow Ink Sacs
  • Dropped by glow squids when killed.
  • Can be used to craft glow item frames.
  • Can be used to make text glow on signs.
Spawn Eggs
  • Added glow squid spawn egg.

Mobs

Glow Squid
  • Originates from the mob with the same name from Minecraft Earth.
  • Underwater mob that behaves like a regular squid.
  • Does not naturally spawn yet.
  • Is attacked by axolotls without provocation.
  • Drops glow ink sacs when killed.
  • Does not affect the light level, only appearing as if lit up itself.
  • Stops glowing for a short time and swims away fast after taking damage.

Changes

Blocks

Dripstone Blocks
Signs
  • Can now be tinted with glow ink sacs to make the text glow.
    • Glowing signs do not affect the light level, only appearing as if the text itself is illuminated.
    • A new lit block state had been added to indicate whether the sign text is lit up.
    • Regular ink sacs can be used to remove the glowing effect.
    • Now has sounds for being dyed.

Gameplay

Death messages
  • Added unique death messages for dying from falling on a stalagmite.
    • "<player> was impaled on a stalagmite" and "<player> was impaled on a stalagmite whilst fighting <entity>".
    • Previously, this death would use the generic fall damage death messages.
Recipe book
Subtitles
  • Changed Lava drips into cauldron to Lava drips into Cauldron.
  • Changed Water drips into cauldron to Water drips into Cauldron.
  • Changed Shulker bullet explodes to Shulker Bullet explodes.
  • Changed Shulker bullet breaks to Shulker Bullet breaks.

General

Block Models
  • Made the vine's block model much simpler.
Servers
  • Changed the error message for failing to connect to the authentication servers. Now says they are "not reachable" instead of "down for maintenance".
Tags
  • Added glow squids to the axolotl_always_hostiles entity type tag.
Obfuscation map
  • Changed the license included in the obfuscation map.
World Selection
  • Added unique warnings for downgrading a world.
Languages
  • Removed the following languages due to incomplete translations:
    • Gothic
    • Kabyle
    • Maori
    • Mohawk
    • Nuk
    • Ojibwe
    • Talossan
Customized World
  • World height/depth can now be adjusted to a max of Y=-2048 to Y=2031, mountain and cave generation will scale accordingly similar to amplified world type.[12][13]

Fixes

46 issues fixed
From released versions before Java Edition 1.17
  • MC-89880 – Spawner with weight 0 crashes the game.
  • MC-91522 – Shulker rendering position desync and generates ghost shulker when destroying shulker-ridden boat or minecart.
  • MC-92349 – Players cannot tempt animals with food while other players are closer to the animal.
  • MC-92867 – Setting JSON text value to null throws exceptions and crashes.
  • MC-96322 – Shulkers are unable to attack from boat.
  • MC-99098 – Shulker open and close hitbox is not updated, when they ride boat, minecart or mobs.
  • MC-105344 – Shulkers in boats and minecarts do not sit up if previousely attached to blocks sideways.
  • MC-108717 – Shulkers cannot be pushed back.
  • MC-111196 – Using a monster spawner to spawn shulkers spawns white shulkers.
  • MC-113177 – Shulkers cannot be pushed inside non-solid blocks.
  • MC-119051 – Random transparent line in shulker box GUI texture.
  • MC-121897 – Gaps in an animation's used frames throws ArrayIndexOutOfBoundsException.
  • MC-131564 – Models that have locked uv in blockstates ignore texture rotation.
  • MC-139265 – Shulkers do not teleport correctly when going through a portal.
  • MC-156109 – Turtles do not follow players in Creative mode holding seagrass.
  • MC-161334 – Shulker boxes cannot be opened if next to a shulker mob.
  • MC-168900 – Shulkers teleport with original dimension coordinates after passing through portals.
  • MC-174876 – Shulker spawn egg spawns shulker inside soul sand, snow layers, farmland, grass path and honey block.
  • MC-183067 – Shulkers can push marker armour stands.
  • MC-183884 – Shulkers are afraid of being next to another shulker.
  • MC-186172 – Shulkers open into blocks when unable to teleport.
  • MC-190677 – Shulkers are notaligned to the grid for a split second after being spawned in.
  • MC-193386 – Shulkers spawned attached to the groud attaches themselves to a wall after another shulker is spawned.
  • MC-194089 – Shulkers at some Y positions refuse to get a Peek value.
  • MC-200195 – Boats do not try dismounting the player on land.
  • MC-202202 – Servers are unable to prevent a player from dismounting a vehicle, causing a desync.
  • MC-203373 – Shulker bullet subtitles are not capitalized correctly.
  • MC-203397 – Ceiling vines rotate when other vines are placed in the same block space.
  • MC-208639 – Chiseled Blackstone Recipe unlocks when you get polished blackstone, not polished blackstone slab.
  • MC-210791 – Dropping an item on a shulker launches the item off.
From the Java Edition 1.17 development versions
  • MC-203571 – Right-clicking an empty bundle sometimes plays hand animation.
  • MC-204337 – Bundle use stat never increases.
  • MC-205076 – Game mode selection is ordered differently.
  • MC-206118 – "type" in loot table number providers is not optional anymore.
  • MC-206510 – Game crashes when trying to shift-click a chest into the inventory of a donkey whose chest is being removed.
  • MC-206550block.pointed_dripstone.drip_[liquid/cauldron] has no subtitles.
  • MC-206923 – Dripstone subtitles are not capitalized properly.
  • MC-207250 – Dripstone caves biome name is not properly capitalized.
  • MC-207254 – Dripstone caves generate merging dripstones in impossible ways.
  • MC-207293 – Dripstone generated in dripstone caves can replace lava sources which looks weird.
  • MC-207335 – Mobs cannot spawn in dripstone caves.
  • MC-207388 – Issues with chunk rendering when height limit is large.
  • MC-207900 – Summoning "dust" or "dust_color_transition" particles kicks nearby players when on a server.
  • MC-208336 – "player" sub-predicate of "entity_properties" predicate only passes if game mode is specified.
From the previous development version
  • MC-208611 – Shulker boxes and bundles duplicate items when destroyed by two fire blocks simultaneously.
  • MC-208666 – Shulker boxes and bundles drop their items twice when thrown into a lava cauldron.

21w05a

21w05a is the seventh snapshot for Java Edition 1.17, released on February 3, 2021, which adds lush cave related features and fixes bugs.[14]

Additions

Blocks

Azalea
  • Bush-like block which can be planted on dirt and grass blocks.
  • Has variants with either no blossoms or pink blossoms.
  • Azalea can grow from moss blocks when bone meal is used on them.
Azalea Leaves
  • Has variants with either no blossoms or pink blossoms.
  • Yield azalea and sticks on decay.
Cave Vines
  • A natural light source, with a light level of 10 or 14 (depending on whether it's head or body).
  • Drop glow berries.
    • Growth can be sped up using bone meal.
    • Berries can be harvested by interacting with the vine.
  • Grow from glow berries when placed on the underside of a block.
  • Unlike regular vines, they cannot be climbed.
Dripleaf
  • Allows an entity to stay on it for 1.5 seconds (30 ticks), before the entity will fall through it.
    • The tilt happens in 3 stages: Unstable, Partial, and Full. These can be seen in the F3 debug menu.
      • All the stages are solid except the Full stage, which is when the player falls through.
      • When nobody is standing on it, it is set to None stage.
      • If the player sneaks on it while it's in the Unstable stage, it will return to None. Sneaking on it while it's in Partial or Full stage has no effect.
  • Comes in two sizes: Small and Big. Small can be applied bone meal to grow into Big.
    • Small Dripleaf can only be obtained with shears (otherwise breaks), and can only be planted on clay, or underwater on clay and dirt blocks.
    • Big Dripleaf can be obtained with any tool or by hand, as well as breaking it using projectiles, and can be planted on grass and dirt blocks.
Hanging Roots
  • Decorative blocks that can only be placed on the underside of a block.
  • Obtained with shears, otherwise breaks.
Moss Block
  • An opaque block with a grass-like texture on all sides.
  • Can be bonemealed to grow grass, tall grass, moss carpets and both types of azaleas on it and in its vicinity.
  • Breaks when pushed by a piston.
Moss Carpet
  • Same texture as the moss block, but one pixel thick.
  • Crafted with moss blocks.
Rooted Dirt
  • Decorative blocks.
  • A dirt-like block with roots on its texture.
  • Similar to coarse dirt, neither mycelium nor grass spread to it.
Spore Blossom
  • Can only be placed on the underside of a block.
  • Sends particles downward when opened.

Items

Glow Berries
  • Can be eaten, restoring 2 (🍗).
  • Grow on cave vines.

General

Particles
  • Added new particles: falling_spore_blossom, spore_blossom_air
Tags
  • Added the azalea_log_replaceable block tag.
    • Contains the #flowers block tag, the #leaves block tag, grass, ferns, sweet berry bushes, and small dripleaf plants.
  • Added the cave_vines block tag.
    • Contains the cave vines body block and cave vines head block.
  • Added the lush_plants_replaceable block tag.
    • Contains the #base_stone_overworld block tag, the #cave_vines block tag, dirt, gravel, sand, moss block, the #flowers block tag, grass, tall grass, moss carpet, small driplead, big dripleaf, big dripleaf stem, and vines.
  • Added the fox_food item tag.
    • Contains sweet berries and glow berries.
Textures
  • Added a block texture named root_vines_head.png.
    • This texture is unused in-game.

Changes

Blocks

Copper block, Cut Copper Block, and variants
  • The stages are now called "Copper Block", "Exposed Copper Block", "Weathered Copper Block" and "Oxidized Copper Block" to match Bedrock Edition.
    • This also applies to cut copper and its variants.
  • Is now affected by the randomTickSpeed gamerule.
Composter
  • Some items are now compostable:
    • 30% chance: non-flowering azalea leaves, glow berries, moss carpet, small dripleaf, hanging roots.
    • 50% chance: flowering azalea leaves.
    • 65% chance: spore blossoms, non-flowering azalea, moss blocks, big dripleaf.
    • 85% chance: flowering azalea.
Lightning rod
  • Lightning rods are now shaded properly.
Powder Snow
  • Can now be pushed and pulled by pistons and sticky pistons.
  • Flaming arrows that collide with powder snow will be extinguished.
Sculk Sensor
  • Added the following game events that the Sculk Sensor reacts to, along with corresponding frequency value
Vibration Types Frequency Value
Minecart Moving, Ring Bell, Block Change 6
Drinking Finish, Prime Fuse 7
Mob Interact 8
Equip, Shear, Ravager Roar 9
Entity Place 12
Entity Killed 13
Shulker Close 14
Shulker Open 15
  • Block change is for when a player or dispenser changes a block.
    • This includes placing a book on a lectern, placing and removing items from a flower pot, putting out a campfire, placing a candle on a cake, tilting a big dripleaf, and putting out a candle.
  • Mob interact is for certain mob interactions to cause vibrations.
    • This includes giving a golden apple to zombie villager with Weakness, healing a tamed wolf, using an iron ingot to heal an iron golem, and most instances of successfully feeding an animal.
  • Prime fuse applies to both creepers and TNT.
  • The equip event checks for giving items to an armor stand and pressing the use button to equip armor from the hotbar.
    • Manually equipping armor does not trigger sculk sensors.
    • Removing armor, from the player or from an armor stand, does not trigger sculk sensors.
    • Equipping items on other mobs, such as horses, does not trigger sculk sensors.
Stonecutter

Items

Bundle
  • The player now receives a tutorial when first having a bundle in the inventory.

Mobs

Drowned
Foxes
  • Eat glow berries.
  • Can now walk over powder snow without sinking.
Skeletons
Wandering Traders

Gameplay

Advancements
  • Glow berries are now required for A Balanced Diet.
NBT data
  • All projectile entity data now has a field called HasBeenShot.
    • If this field is false, during the next tick the projectile will fire a projectile shot game event, causing any nearby sculk sensors to react.

General

Game events
  • Removed the armor stand add item, eating finish, entity hit, and flint and steel use events.
  • Added the block change, drinking finish, eat, entity damaged, entity killed, entity place, equip, mob interact, minecart moving, prime fuse, ravager roar, ring bell, shear, shulker close, and shulker open events.
Resource packs
  • Improved performance when using many overrides on an item model.
  • toasts.png GUI texture has a new icon for the bundle tutorial.
Tags
  • Added azalea leaves and azalea leaves flowers to the leaves block and item tags.
  • Added foxes to the powder_snow_walkable_mobs entity type tag.
  • Changed the ignore_vibrations_stepping_carefully gave event tag.
    • Renamed to ignore_vibrations_sneaking.
    • Added the swim event.
  • Updated the vibrations game event tag to match the full list of game events (see above).
Customized World
  • World height/depth is shrunk to a max range of Y=-2032 to Y=2031 now(compares with the previous version: Y=-2048 to Y=2031), due to the limitation of light processing codes.[15]

Fixes

99 issues fixed
From released versions before Java Edition 1.17
  • MC-96114 – Shulker can lift up mobs.
  • MC-103430 – Vines breaking too slow (enchanted shears).
  • MC-130098 – Debug world spawns player at y=2 instead at y=70 where all the blocks are.
  • MC-142711 – Baby turtles take damage when pushed against ceiling.
  • MC-148432 – Sound spam while in water and lava at the same time.
  • MC-149495 – Pufferfish triggers tripwire without colliding with it upon reloading the game.
  • MC-152265 – Starting server outputs "unable to resolve BlockEntity for ItemStack" errors.
  • MC-153254 – Baby zombies/piglins take damage when pushed against ceiling by bubble columns.
  • MC-163673 – Baby husks, piglins, zombies, zombie villagers, and zombified piglins take damage when jumping into a space with a solid block above it.
  • MC-165846 – Pufferfish can take suffocation damage when bloating.
  • MC-172466 – Entities misaligning when growing up.
  • MC-186879 – Standing in fire and water spams the extinguish sound.
  • MC-190454 – Desync when a player rides a horse riding another mob, and that mob dies.
  • MC-191714 – Player is dismounted when standing on farmland while riding a horse/boat while the farmland turns to dirt, causing a desync.
  • MC-197947 – Creative mode player constantly gets extinguished while standing in constant fire in rain, making constant sound.
  • MC-198432 – Pufferfish phases through blocks after reloading world.
  • MC-199356 – chatDelay in options.txt has a space between the colon and the value.
  • MC-199543 – Parity issue: Vine sounds.
  • MC-200906 – Pufferfish hitbox incorrect when reloading world.
  • MC-203374 – Falling blocks broken by shulkers have a strong directional bias.
  • MC-205477 – Occasional desync when trying to enter/exit a boat while the server is lagging.
  • MC-205735 – Baby cows can suffocate on stairs.
  • MC-209361 – Game crashes upon instantly click-replacing the block underneath a bamboo sapling with another bamboo.
  • MC-209625 – Baby llamas suffocate when below a solid block while standing on top of a carpet.
  • MC-212291 – Client can dismount vehicles independently from the server, causing a de-sync.
  • MC-222189 – Piston lag escalates massively with the total tile entity count.
From the Java Edition 1.17 development versions
  • MC-203555 – Typo in "Weathered Copper BlocK".
  • MC-203594 – Inconsistent spelling with copper blocks.
  • MC-204301 – Lightning rods don't strongly power the blocks they are attached onto.
  • MC-204801 – Large amounts of copper blocks lag the server and causes the worldsave to take forever.
  • MC-205079 – Cauldrons don't fill with powder snow in some biomes.
  • MC-205401 – "Fire extinguishes" Sound repeatedly plays when a mob that burns in daylight is in powder snow.
  • MC-206113 – Powder Snow causes Z-Fighting with Falling Blocks.
  • MC-207256 – Overwriting sculk sensors with themselves using /fill causes them to not work.
  • MC-207258 – Sculk sensors do not react to minecarts being driven.
  • MC-207261 – Bell ringing event is not considered a vibration.
  • MC-207262 – Drinking potions or milk doesn't cause vibrations even though eating does.
  • MC-207263 – Inconsistency: Filling cauldrons with liquids or powder snow is not detected by sculk sensors.
  • MC-207277 – Sculk sensor can't detect setting a fire with fire charge.
  • MC-207283 – Extinguishing a campfire is not detected by sculk sensor.
  • MC-207300 – Blocks being placed or picked up by an enderman are not detected by sculk sensors.
  • MC-207329 – Sculk sensors don't properly detect eating from other mobs.
  • MC-207340 – Sculk sensors do not detect buckets of fish being emptied.
  • MC-207358 – Sculk sensors don't detect shulkers opening and closing.
  • MC-207384 – Flame arrows repeatedly trigger sculk sensors.
  • MC-207387 – Sculk sensors can sense players sneaking in water when they move, even when they're not swimming.
  • MC-207391 – Sculk sensors don't detect certain flying mobs.
  • MC-207397 – The fire extinguish sound plays every tick when the player is on fire and freezing.
  • MC-207407 – Villages will always generate at least on y=0.
  • MC-207408 – Trying to generate something below y=0 results in game crash.
  • MC-207417 – Directly breaking fire does not alert sculk sensors, but removing its supporting block correctly does.
  • MC-207418 – Breaking paintings/item frames/glow item frames does not alert sculk sensors, even though placing them does.
  • MC-207445 – Sculk sensor doesn't detect squids swimming.
  • MC-207473 – Sculk sensors do not detect when ghasts shoot.
  • MC-207520 – Sculk sensors don't react to ravager roars.
  • MC-207521 – Ocelots and cats can still emit vibrations while sneaking.
  • MC-207592 – Shooting bow with flame enchantment while sneaking triggers sculk sensor.
  • MC-207600 – Sculk sensor detects wrong sound for fishing rod.
  • MC-207670 – Sculk sensors do not detect the placement of boats and minecarts.
  • MC-207671 – Sculk sensors do not detect candles being placed into cakes.
  • MC-207672 – Sculk sensors do not detect when creepers are set off with flint and steel.
  • MC-207673 – Sculk sensors do not detect lighting TNT with flint and steel.
  • MC-207674 – Sculk sensors do not detect placing things in flower pots.
  • MC-207675 – Sculk sensors do not detect books being placed onto lecterns.
  • MC-207677 – Sculk sensors do not detect collecting water with bottles.
  • MC-207678 – Sculk sensors do not detect collecting honey bottles.
  • MC-207679 – Sculk sensors do not detect the breaking of bee nests and beehives in Creative mode.
  • MC-207745 – Sculk sensors do not detect when ender dragons shoot fireballs.
  • MC-208193 – Sculk sensors do not detect removing things from flower pots.
  • MC-208194 – Sculk sensors do not detect when candle cakes are eaten.
  • MC-208477 – Going into a dimension that has height higher than the maximum height crashes the game.
  • MC-208602 – Axolotls summoned with a command dry out instantly.
  • MC-209903 – Sculk sensors are not activated upon shearing sheep, mushrooms, snow golems and pumpkins.
  • MC-209926 – Sculk sensors are not activated upon collecting Dragon's Breath.
  • MC-209953 – Sculk sensors are not activated upon extinguishing a candle.
  • MC-210000 – Sculk sensors do not detect when blazes shoot fireballs.
  • MC-210282 – Sculk sensors are not activated upon silverfish or endermite moving along the ground.
  • MC-210495 – Sculk sensors are not activated upon lighting a campfire or candle with a fire charge.
  • MC-210815 – Sculk sensors are not activated upon shulkers shooting.
  • MC-211119 – Sculk sensors do not detect when withers shoot wither skulls.
  • MC-212384 – Sculk sensors do not detect cake being eaten.
  • MC-212432 – Sculk sensors are not activated upon using a spawn egg.
  • MC-212449 – Fish/(glow) squid spawned using /summon dry out instantly.
  • MC-213512 – Copper blocks are named differently from bedrock edition.
From the previous development version
  • MC-212117 – Placing glow lichen in lava creates waterlogged glow lichen.
  • MC-212141 – Shulkers get rotated when upgrading to 21w03a.
  • MC-212149 – Shulker is sometimes mis-rotated when player teleports through a nether portal and reloading an active chunk with Shulker.
  • MC-212211 – Glow lichen is not grouped with vines in the creative inventory.
  • MC-212215 – Glow Lichen mining speed is not affected by efficiency.
  • MC-212284 – Crammed enitities pushed through blocks when growing to adults.
  • MC-212290 – Commands /setblock and /fill don't work at or above height 1024 in some cases.
  • MC-212331 – Boats dismount you in the direction the boat is facing instead of the direction of the player.
  • MC-212347 – Importing custom world file height is limited to 2047 instead of 2048.
  • MC-212422 – Game crashes when generating a world with increased height limit.
  • MC-212532 – Shulkers are spawned slightly mis-rotated after a shulker was hit by another shulker's shulker bullet.
  • MC-212537 – Standing near a shulker slightly lifts you when they open.
  • MC-212541 – Shulkers are often incorrectly rotated upon generation.
  • MC-213257 – Drowned do not drop copper.
  • MC-213268 – Copper Blocks variants like slabs/stairs/cut copper cannot be crafted through Stonecutter.

21w05b

21w05b is the eighth snapshot for Java Edition 1.17, released on February 4, 2021, which fixes three bugs and make changes to the copper and its other variants' name.[16]

Changes

Block of Copper and variants
  • Renamed Copper Block to Block of Copper.
  • Removed the word "Block" from oxidized variants of Block of Copper, including waxed variants.
    • The IDs have also been updated.
  • Renamed Waxed Copper to Waxed Block of Copper.
    • The ID has been changed from waxed_copper to waxed_copper_block.

Fixes

4 issues fixed
From the Java Edition 1.17 development versions
  • MC-203813 – Copper blocks are named inconsistently.
  • MC-205054 – Copper blocks called "Copper Block", while blocks of quartz are called "Block of Quartz".
From the previous development version
  • MC-213788 – The game can randomly freeze.
  • MC-213802 – Copper is not upgraded correctly from pre-21w05a worlds.

21w06a

21w06a is the ninth snapshot for Java Edition 1.17, released on February 10, 2021,[17] which adds new cave generation and increased the build height limit to 384.

Worlds created prior to this snapshot or after 21w15a cannot be loaded and edited in this version without NBT editors, due to there being no upgrade path towards the expanded height limits in this snapshot. However, it is possible to use Combat Test snapshot worlds due to the data version exceeding that of the 1.17 snapshots.

Additions

World generation

Caves
  • Added new noise caves, which come in two types: "spaghetti" and "cheese" caves.
  • Added flooded aquifer caves.
  • The old "carver" cave generation still generates, combining with the new caves.
Spaghetti caves
  • Long, narrow caves.
  • Utilize noise generators for generation.
  • Can form cave entrances when they intersect with land.
Cheese caves
  • Utilize noise generators for generation.
  • Often form caverns of various sizes.
  • Can form cave entrances when they intersect with land.
Aquifers
  • Used to generate bodies of water in new caves.
  • Currently only used below Y=31, meaning any noise caves between Y=31 and Y=63 are flooded with water. This is fixed in Java Edition 1.18 Experimental Snapshot 1.
  • Magma blocks may generate at the bottom of these new water bodies, creating downward bubble columns.
  • Replaces the old underwater cave carvers/canyons.
  • Fish spawn in aquifers if it is under an ocean or river.

General

Data Packs
  • Added  aquifers_enabled and  noise_caves_enabled to worldgen/noise_settings/*.json.

Changes

Blocks

Big Dripleaf
  • Will no longer stop tilting while sneaking on, jumping on, or even jumping off it.
  • Will now tilt quicker.
  • Now tilt when hit with a projectile, instead of being broken.
  • Can now be used with redstone.
    • Powering a dripleaf will now prevent it from tilting down (except for projectiles).
    • Powering an already tilted dripleaf will tilt it back up.
    • Unpowering a dripleaf down will allow it to tilt down again.
Hanging Roots
  • Texture has been changed.
Small Dripleaf
  • Texture has been changed.

World generation

Chunks
  • The Overworld now has a total height of 384 blocks.
    • The world has been extended 64 blocks up and 64 blocks down, which means it's now possible to build from layer -64 to layer 319 in the Overworld.
    • Ore placement below Y=0 is temporary, and underground lava does not generate properly yet.[18]
Mineshafts
  • Mineshaft pieces no longer generate if they were fully floating in the air.
  • Corridors now generate with (bark) wood pillars for support if needed.
  • Cobwebs no longer generate floating without an adjacent block.

General

The warning message attached to old worlds.

1.16 world loaded in 21w06a by changing the level.dat

World selection menu
  • Disabled the loading of old worlds temporarily.
    • This can be bypassed by setting the data version in level.dat to 2694 or higher. However, this may cause issues.

Fixes

6 issues fixed
From released versions before Java Edition 1.17
  • MC-105035 – Floating mineshafts generating incorrectly in shade.
From the Java Edition 1.17 development versions
  • MC-205227 – Wither Skeletons don't die in powdered snow unless fully submerged.
  • MC-213813 – Small dripleaf can destroy any block.
  • MC-213941 – Big dripleaf inconsistently play sounds when in the unstable state.
From the previous development version
  • MC-214118 – When mobGriefing is disabled, big dripleaves can still be destroyed by projectiles shot by mobs.
  • MC-214346 – Big dripleaf can be broken with arrows in spawn protection.

21w07a

21w07a is the tenth snapshot for Java Edition 1.17, released on February 17, 2021,[19] which adds grimstone and tweaks ore and cave generation.

Additions

Blocks

Grimstone
  • A new type of stone.
  • Generates below Y=0.
    • Has a gradual transition from stone to grimstone starting from Y-level -1 until it reaches -8.
    • Takes over fully underground starting from Y=-8.
  • Functions identical to cobblestone and blackstone in that grimstone can be used to craft basic tools, furnaces and brewing stands.
  • Can be used as a decorative block.
  • Has a hardness value greater than that of stone but can be mined with any pickaxe.
  • Can't be insta-mined unlike stone.

General

Data Packs
  • Added  grimstone_enabled to worldgen/noise_settings/*.json.

Changes

Blocks

Big dripleaf
  • Slightly changed model.

The new ore textures.

Blackstone, polished blackstone bricks, and cracked polished blackstone bricks and stair, slab and wall variants
  • Slightly changed the texture.
Glow Lichen
  • Can now naturally generate on grimstone.
Ores
Beacon
  • Beacon beams are now visible up to 1343 blocks away from the source instead of 256 blocks.

World generation

Ore distribution changes.

Caves
  • Noise caves and aquifers appear less often.
Mineral distribution
  • Changed ore generation of all ores making them have a spread value like lapis lazuli ore. Some still retain a linear generation alongside a spread generation.
  • Coal ore, emerald ore, and copper ore no longer generate below Y=0.
    • Copper ore generates between the Y=0 and Y=96 and like all other ores, uses spread. It peaks at Y=48.
    • Emerald ore generates above Y=32 (up to Y=480 in custom worlds) as a spread, peaking at Y=256 and decreasing in quantity as the altitude decreases.
    • Coal ore attempts to generate twice: once, evenly between an altitude of Y=136 and Y=256; and as a spread, peaking at an altitude of Y=96 and generating between an altitude of Y=0 and Y=192.
  • Other ores also generate differently.
    • Iron ore attempts to generate twice: once as a spread peaking at an altitude of Y=256, generating above Y=128 (up to Y=384 in custom worlds); and another as a spread peaking at Y=32 and generating with a minimum height of Y=-16 and a maximum height of Y=80.
    • Gold ore generates between the altitudes of Y=-64 and Y=32, peaking at Y=-16. The extra gold that generates in the badlands biome was left untouched.
    • Lapis lazuli ore attempts to generate twice: once, as a spread between the altitudes of Y=32 and Y=-32, peaking at an altitude of 0; and evenly between an altitude of Y=64 and Y=-64, generating buried like ancient debris.
    • Redstone ore attempts to generate twice: once, evenly between an altitude of Y=15 and Y=-64; and as a spread, peaking at an altitude of -64 and generating below an altitude of Y=-32 (down to Y=-96 in custom worlds).
    • Diamond ore now generate as a spread, generating below Y=16 and peaking at altitudes near y = -64.
  • Tweaked size and positioning of diorite, andesite & granite generation.
    • Pockets of diorite, granite and andesite are now larger and more spherical but less common.
    • Diorite, granite, gravel and dirt no longer generate below Y=0.
  • Grimstone now generates as the dominant stone below Y=0.
Mineshafts
  • A 1.17 Mineshaft with ceiling supports and oak log supports from the ground

    A 1.17 Mineshaft

    Corridors are now supported by chains and oak fences above when the layer is nearer to the ceiling than the floor.
  • Wood pillars are now made of logs instead of wood.
Strongholds

General

Creative inventory
  • The Redstone Tab has been reordered to prioritize highly-used blocks.
  • Redstone items/blocks have been grouped and ordered in the following way (from top to bottom): Essentials, Unique activators, Miscellaneous, Common activators, Openables.
Data Packs
  • Vanilla configured features for ore types have changed:
    • Coal and iron have been split into two parts called _upper and _lower
    • New lapis configured feature: ore_lapis_buried
  • The glow_lichen feature now lists grimstone as a valid block.
  • Changes to the range decorator configuration:
    • bottom_offset, top_offset and maximum fields removed
    • Replaced with bottom_inclusive and top_inclusive which are both a new type of vertical anchoring
    • This type can have several forms:
      • absolute - specifies an absolute y value
      • above_bottom - specifies an offset above the minimum y coordinate of the world
      • below_top - specifies an offset below the maximum y coordinate of the world
  • The range_biased and range_very_biased feature decorator are now called range_biased_to_bottom and range_very_biased_to_bottom respectively.
    • Both biased types of ranges now have bottom_inclusive and top_inclusive of the same type, and a cutoff value that's a numeric value
  • The depth_average decorator also now has its baseline field as a vertical anchor instead of an absolute y value.
  • A whole range of decorators no longer exist or have had part of their functionality replaced by using some of the already existing generic decorators:
    • dark_oak_tree decorator no longer does a heightmap check, needs to be done with a heightmap decorator
    • The end_gateway decorator has been split, now used with a combination of chance, square & heightmap - see the end_gateway configuration in the vanilla pack for an example
    • The glowstone_blob feature no longer does its own decoration, instead is used with a combination of square & range. See glowstone_extra in vanilla files for example.
    • The lava_lake feature has also been split, now used with chance, square, and range_biased_to_bottom. See lake_lava for an example.
    • The water_lake decorator has been removed. Now instead chance, square & range
    • The emerald_ore decorator has been removed. Now instead count, square & range
    • The fire decorator has been removed. Now instead range, square & count
    • The carving_mask no longer has a probability field, replaced with a chance decorator
Tags
  • Added grimstone to the base_stone_overworld block tag and the stone_crafting_materials, and stone_tool_materials item tags.
  • Added various grimstone variants to the slabs, stairs, and walls block and item tags.

Fixes

12 issues fixed
From released versions before Java Edition 1.17
  • MC-147589 – Vines no longer randomly generate in jungles.
  • MC-183547 – Stone and polished blackstone buttons/pressure plates are located at opposite ends of the spectrum of buttons in the Creative inventory despite being identical in behavior.
From the Java Edition 1.17 development versions
  • MC-208613 – Amount of players who need to sleep to skip the night is calculated incorrectly.
  • MC-208618 – Clicking on a bed immediately skips the night if gamerule playersSleepingPercentage is set to 0.
  • MC-211224 – Seagrass can occasionally replace parts of a swamp hut.
  • MC-214082 – Crash after placing soul sand or magma under 2032-block-tall water.
From the previous development version
  • MC-214814 – Strongholds generate floating and without walls, floors, or ceilings when inside caves.
  • MC-214885 – Beacon beam only render 256 blocks from source.
  • MC-214917 – Lapis Lazuli doesn't generate on the lower levels of the world.
  • MC-214928 – Mineshaft corridor support pillars are made out of wood, not logs.
  • MC-214973 – Powder snow bucket in a dispenser at Y=319 facing upwards or at Y=-64 facing downwards is replaced with empty bucket, despite no powder snow being placed.
  • MC-214986 – Large dripstones only generate as stalagmites below Y=0.

21w08a

21w08a is the eleventh snapshot for Java Edition 1.17, released on February 24, 2021,[20] which renames grimstone to deepslate, adds deepslate ores, and makes changes to cave generation.

Additions

Blocks

Cobbled Deepslate
  • Drops from deepslate when mined with a pickaxe without Silk Touch.
  • Functions identical to cobblestone and blackstone in that it can be used to craft basic tools, furnaces, and brewing stands.
  • Is used to craft all the deepslate variant blocks instead of regular deepslate.
  • Has wall, stair, and slab variants as well.
Deepslate Ore
  • Added deepslate variants of diamond, iron, gold, lapis lazuli, and redstone ores.
  • Takes twice as long to mine as normal ores.
  • Has the texture of deepslate replacing the normal stone texture.
  • Takes place of ores that generate in deepslate.
    • Normal stone ores may still generate deep underground if they replace a different block, such as tuff.
  • Can be used in blasting and smelting recipes like normal ores.
    • These recipes can be unlocked in the recipe book with deepslate ores as well.
Smooth Basalt

World generation

Crack carvers
  • Deep, long cracks in the ground that are thinner and straighter than canyons.[21]
  • Can reach over 90 blocks in depth.
  • They are very similar to ravines in Bedrock Edition.

General

Tags
  • Added the deepslate_ore_replaceables block tag.
    • Contains deepslate.
  • Added the diamond_ores, iron_ores, lapis_ores, and redstone_ores block and item tags.
    • Contain the normal and deepslate variants of each ore type.
  • Added the stone_ore_replaceables block tag.
    • Contains stone, granite, diorite, andesite, and tuff.

Changes

Blocks

Blackstone, deepslate, polished deepslate, chiseled deepslate, deepslate bricks, deepslate tiles and stair, slab and wall variants
  • Texture has been tweaked slightly.
Gold ore
Coal ore, copper ore, emerald ore, iron ore, lapis lazuli ore, redstone ore
  • Tweaked texture.
Deepslate
  • Renamed from "Grimstone".
  • Is no longer used to craft or repair any blocks or items.
  • Has new unique breaking, placing, and footsteps sounds.
  • Can only be mined with a Silk Touch pickaxe.
Spore blossoms
  • Particles now appear in the air around the block.

World generation

Amethyst geodes
  • Can no longer generate fully in midair.
  • The tuff layer has been replaced with smooth basalt.
Andesite
  • No longer generates below Y=0.
Caves
  • Tweaked cave sizes.[22]
  • Ravines and regular cave carvers now generate below Y=0.
  • Added more variation to carvers.[23]
  • Caves are now more filled with water.
Glow lichen
  • Generates almost twice as often.[24]
Lava
  • Once again generates at the bottom of the world starting at Y=-54.
  • Lava springs can now generate below Y=0.
Water
  • Water springs can now generate below Y=0

Ore distribution changes.

Mineral distribution
  • Ore distribution has been changed again.
    • Iron now generate below Y = 0, but in smaller blobs and not as frequently.
      • This was determined to be a bug, which was fixed in snapshot 21w08b.
    • Gold is a little more common, but with 50% blocks exposed to air skipped.
    • Diamond is the same, but with 50% blocks exposed to air skipped as well.
    • Increased frequency of buried lapis.
    • Copper is now less common.
Mineshafts
  • Now generate again in the open air in caves.
  • No longer appear floating.
Tuff
  • Now generates in blobs below Y=0.

General

Creative inventory
  • Slime blocks and honey blocks have been moved to the Redstone tab.
    • The categories of the recipes for these blocks in the recipe book have moved as well.
  • Lectern position within the Redstone tab has been moved out of the "essential" group.
Tags
  • Added tuff to the base_stone_overworld block tag.
  • Added deepslate gold ore to the gold_ores block and item tags.

Fixes

3 issues fixed
From the Java Edition 1.17 development versions
  • MC-213926 – Rooted dirt footstep sounds are considerably quieter than normal dirt footstep sounds.
  • MC-214782 – Geodes can generate floating in caves.
  • MC-214843 – Old style caves do not generate past Y=0.

21w08b

21w08b is the twelfth snapshot for Java Edition 1.17, released on February 25, 2021,[25] which fixes two issues with ore distribution.

Fixes

2 issues fixed
From the Java Edition 1.17 development versions
  • MC-216101 – Redstone ore generates with a flat distribution below Y=12.
From the previous development version
  • MC-216744 – Iron ore does not generate above Y=0.

21w10a

21w10a is the thirteenth snapshot for Java Edition 1.17, released on March 10, 2021,[26] which adds lush caves and new deepslate variants.

Additions

Blocks

Cracked Deepslate Bricks
  • A cracked variation of deepslate bricks.
  • Obtained by smelting deepslate bricks.
Cracked Deepslate Tiles
  • A cracked variation of deepslate tiles.
  • Obtained by smelting deepslate tiles.
Deepslate Ore
  • Added deepslate ore variants for copper, emerald and coal ore.
    • Do not generate by default; they only have been added for use by creators of maps and data packs.
    • Like other deepslate ores, they can be used in blasting and smelting recipes like normal ores.
      • Again, like other deepslate ores, they will unlock these recipes in the recipe book.
Infested Deepslate
  • An infested variant of deepslate.

World generation

Azalea Tree
Lush Caves biome
  • Currently the biome is only accessible in single-biome worlds.
  • Adaptive to the environment: every type of cave generation can be a lush cave.
  • Moss covers the floors and ceilings, along with moss carpets and grass on the floors.
  • Spore Blossoms grow from the ceiling and drip particles.
  • Contains clay pools where dripleaf plants grow out of them.
    • Clay pools will sometimes generate water sources over air, and the water is suspended and does not flow. This has yet to be fixed.
  • Contains azalea bushes (both variants).
  • Cave vines with glow berries grow from the ceiling and light up the caves.

General

Shaders
  • Are now included for all supported render states.
  • Any shader except for the blit shader can also be replaced in resource packs.
  • For now replacing these shaders is not officially supported and the way it works may change in the future.
  • Current rendering engine uses a system similar to the post processing shader pipeline. There are some differences between both system that cater to the slightly different requirements.
Tags
  • Added the coal_ores, copper_ores, and emerald_ores block and item tags.
    • Contain both the normal and deepslate ores of each ore type.
  • Added the lush_ground_replaceable block tag.

Changes

Blocks

Deepslate diamond ore, deepslate gold ore, deepslate iron ore, deepslate lapis lazuli ore, deepslate redstone ore, coal ore, diamond ore, iron ore, gold ore
  • The textures of these ores have been changed.
    • Iron ore and deepslate iron ore no longer have streaks, better matching the appearance of other ores.
    • Diamond ore closer resembles deepslate diamond ore.
Cobbled Deepslate
  • The texture has been changed.
  • Can now be smelted back into deepslate.
Deepslate
  • Both the top and sides textures have been changed.
  • Deepslate can now be placed along any axis.
  • Textures in caves now generate with a random rotation.
Deepslate Bricks and Deepslate Tiles
  • Can now be crafted.
Lightning Rod
  • Changelog states they can now be waterlogged, though this is not the case.
Moss Block
  • Using bone meal on it now spreads moss to blocks on any height.

Items

Spyglass
  • The item model has been changed back to a dedicated texture.
    • Similar to tridents, the spyglass still uses a 3d model in the hand.
    • The texture is different from the original item texture.

Mobs

Slime
  • The maximum size that slimes can be summoned with is now 128.

World generation

Crack carvers
  • Now are much less common.
Fossils
  • The fossils in the deepest part of the underground generate with Deepslate Diamond Ore instead of Coal Ore.

The new ore generation for 21w10a.

Ore distribution
  • Now generates more emerald ore in mountains.
  • Now generates more lapis lazuli ore.
  • Now generates less copper ore, gold ore, and redstone ore.
  • Now generates smaller diamond ore blobs, but slightly more frequent (less diamond ore overall though).
  • Now generates less iron ore, and it generates lower down.
    • The deepest iron generation range: previously Y = -64 to -8, now Y = -64 to -32.
    • The middle iron generation range: previously Y = -16 to 80(most at 32), now Y = -24 to 56(most at 16).
  • Reduced air exposure for coal ore.

Command format

/give
  • The give command can only give up to 100 stacks of items at a time (e.g. 6400 stone or 100 iron swords)
/spawnpoint
  • Can no longer set a player's spawnpoint to areas that are out of the world.

Gameplay

Glowing
  • Glowing is now based on the outline of all layers on an entity, not just the base layer.

General

Game library updates
  • Rendering is now using OpenGL 3.2 core profile.
    • All fixed function rendering has been replaced with shader based rendering.
Splashes
  • Changed the splash "OpenGL 2.1 (if supported)!" to "Now on OpenGL 3.2 core profile!"
Subtitles
  • Glow item frames have their own subtitles, no longer using the same subtitles as normal item frames.
Tags
  • Removed moss block, the #flowers block tag, grass, tall grass, moss carpet, small dripleaf, big dripleaf, big dripleaf stem, and vines from the lush_plants_replaceable block tag.
  • Removed the azalea_log_replaceable block tag.

Fixes

52 issues fixed
From released versions before Java Edition 1.17
  • MC-29318 – Client misses inventory updates while player is manipulating items - causes invisible items.
  • MC-32452 – Fog generates only in the centre of the screen.
  • MC-84121 – Shape of glow effect is based on mob's base layer.
  • MC-87019 – Only visible slots are updated clientside when you are inside an inventory.
  • MC-93243 – Fog Rendering On AMD Graphics Cards & Integrated Graphics.
  • MC-124109 – Horses glitched with glowing effect.
  • MC-154094 – Lectern running /clear turns items into ghost items.
  • MC-165208 – Text and other UI elements are completely black when being affected by night vision and the void/blindness simultaneously.
  • MC-173834 – Glowing damaged iron golem outline shows cracks.
  • MC-175964 – Setblock command run by book in lectern to clear inventory run in command block causes ghost items.
  • MC-182455 – Entity shadow texture glitching with resource pack.
  • MC-186864 – Leather armour can appear white.
  • MC-194675 – While spectating a creeper, enderman, spider or cave spider, UI elements are rendered completely white.
  • MC-201316 – The /give command can create so many items that the game will freeze.
  • MC-210408/spawnpoint allows players to set their spawnpoint to out-of-bounds coordinates, which crashes the game when trying to respawn.
  • MC-214629 – FOV decreases when underwater regardless of FOV Effects accessibility setting.
  • MC-215534 – Spectating a mob with a shader whilst having a carved pumpkin equipped turns the screen completely white.
  • MC-216510 – The world border red effect, affects the brightness of a mob's shader.
From the Java Edition 1.17 development versions
  • MC-204782 – The glowing effect outline no longer renders (Intel Graphics on macOS).
  • MC-205112 – Enchantment glint appears white while inside powder snow.
  • MC-206628 – Emptied Bundles have an empty Item Tag.
  • MC-207818 – Placing a sign from the offhand closes the sign UI immediately.
  • MC-208301/clear does not properly affect the item on the mouse pointer after crafting it.
  • MC-208836 – Villager incorrectly holding spyglass.
  • MC-211666 – Guardians attack invisible axolotls.
  • MC-212127 – Normal ink sac and glow ink sac are not grouped in the creative inventory.
  • MC-212144 – Subtitles refer to Glow Item Frame as "Item Frame".
  • MC-212168Ctrl + Pick Block does not copy block state "lit".
  • MC-212216 – Repeatedly clicking on a sign with an ink sac or glow ink sac abruptly stops the hand animation.
  • MC-212236 – Cannot visually critical-hit a glow squid (No sound/particles).
  • MC-212314 – Glow squid remains dark even if there is a light source block next to it.
  • MC-212325 – Glow Squid entity data (potion effects, custom name, ...) does not get saved.
  • MC-213825 – Using bone meal on a moss block only spreads moss to blocks on the same Y level.
  • MC-214781 – Lava does not generate at the very bottom of noise caves.
  • MC-214784 – Fossils can generate floating in caves.
  • MC-214836 – Water caves cause land to be excessively flooded.
  • MC-214844 – Bedrock can be exposed to the air at the very bottom of the new caves.
  • MC-214970 – Phantoms continously make too much flapping sounds.
  • MC-215194 – Structure blocks do not work below Y=0.
  • MC-215838 – There is currently no way to craft deepslate tiles and deepslate bricks.
  • MC-215847 – Infested stone generates in deepslate areas below mountain biomes.
  • MC-215850 – Deepslate Tile Wall comes before Deepslate Brick Wall but Deepslate Bricks come before Deepslate Tiles in creative inventory.
  • MC-215939 – Emerald ore spawns in lower frequencies than it should above Y=100.
  • MC-216136 – Polished deepslate slab isn't grouped with the other deepslate slabs in creative inventory.
  • MC-216363 – Crash upon replacing soul sand or magma with the other under a tall bubble column using /setblock.
  • MC-216492 – Fox incorrectly holding spyglass.
  • MC-216735 – Stone Lapis Ore generating in Deepslate.
  • MC-216736 – Lava lakes generate exposed in caves.
  • MC-216738 – Deepslate diamond ore texture is shifted a pixel to the right.
  • MC-216765 – Coal ore can generate below Y=0 when attached to a fossil.
  • MC-216817 – Inconsistency: Cobbled deepslate cannot be smelted back into deepslate.
  • MC-217020 – Gold ore and deepslate gold ore textures are inconsistent.

21w11a

21w11a is the fourteenth snapshot for Java Edition 1.17 released on March 17, 2021,[27] which fixes numerous bugs, many of which are relating to textures and rendering issues as well as adds new mechanics related to copper.

Additions

General

Controls
  • Added F3 + L shortcut to generate and persist performance metrics from in-game, similar to /debug.
    • Metrics are saved in .minecraft/debug/profiling/<timestamp>.zip.
Particles
  • Added the electric_spark, scrape, wax_off, and wax_on particles.
Tags
  • Added the cluster_max_harvestables item tag.
    • Contains all pickaxes.

Changes

Blocks

Amethyst Cluster
  • Breaking by hand, piston, or other means now drops 2 amethyst shards instead of dropping none.
  • Breaking with any pickaxe can now be used to drop 4 amethyst shards instead of an iron pickaxe or higher.
Azalea
Big Dripleaf
  • Breaking the stem now drops the block.
  • Now can be fertilized with bone meal on the stem to make the dripleaf grow.
Block of Copper, Cut Copper, and variants
  • Honeycomb can now be used to wax them, to match Bedrock Edition.
    • Yellow particles are formed when waxing the block.
  • Using a dispenser with honeycomb waxes them, matching Bedrock Edition.
  • Axes can now be used to scrape off wax and oxidation (one stage at a time).
    • White particles are formed when scraping off wax from the block.
  • Lightning now may clean oxidation, reverting the oxidation process by one or several stages.
    • Chances of cleaning and number of reverted stages are higher the closer to the struck block.
  • Waxed copper blocks can be crafted into 4 copper ingots, to match Bedrock Edition.
Brewing Stand
  • Changed potion icon in the brewing stand GUI to reflect the new bottle texture in the Texture Update.[28]
  • Removed some stray pixels from the GUI texture.
Cauldron
Cave Vines
  • Renamed the parts from "cave vines head" and "cave vines body" to "cave vines" and "cave vines plant", respectively.
    • The IDs have also changed.
  • Now all parts give a light level of 14.
    • Previously, only the bottom-most part gave level 14; others gave only 10.
  • Now slow down the player.
  • Can now be climbed.
Gilded Blackstone
  • The texture has changed.
Glow Lichen
  • Bone meal can no longer be used on it if it has no blocks to spread to.
  • Can now be used on a composter.
Grass Block
  • Changed part of the dirt of the side texture of snowy grass to match regular grass.[29]
Hanging Roots
  • Now renders randomly offset from the center.
  • Removing the support block for it no longer allows it to float.
Lectern
  • Slightly shrunk top part to prevent z-fighting with fire.[30]
Lightning Rod
  • Can now be waterlogged.
  • Now turns completely white when struck by lightning.
  • Now has a new block state: powered, used to determine whether the rod turns completely white when struck by lightning.
  • Now emits particles when in contact with rain.
Moss Block
  • Can be combined with cobblestone or stone bricks to make the mossy versions of those blocks.
    • Vines can still be used, in addition to moss blocks.
  • In addition to axes,[31] hoes are now an appropriate tool to collect it.
Pumpkin
  • Changed one pixel on the pumpkin's top texture to remove the possibility for a small swastika to be displayed.[32]
Rooted Dirt
Signs
  • Changed the textures of acacia, birch, dark oak, jungle, oak, and spruce signs to reflect new textures in the Texture Update.
Small Dripleaf
  • The facing direction of small dripleaf is now determined by which direction the player is facing when placing it.
Smoker
  • Changed the top texture of the smoker.
Spore Blossom
  • Removing the support block for it no longer allows it to float.
Tinted Glass
  • No longer causes suffocation.
  • Mobs can no longer spawn on top of it.

Items

Jungle Doors
  • Changed the texture of the jungle door item to reflect the block texture in the Texture Update.[33]
Spectral Arrows
  • Fired spectral arrows are now entirely golden to reflect the item texture in the Texture Update.[34]
Sugar Cane
  • Changed the texture of the sugar cane item to better reflect biome tinting added in 1.7.2.[35]

Mobs

Cats
  • Changed the texture of the siamese cat type, mostly brightening it.
Guardian and Elder Guardian
  • Removed some stray pixels from the texture file.
Villagers and Zombie Villagers
  • Moved the librarian top overlay texture to correct side of torso.[36]

Non-mob entities

Paintings
  • Changed the back texture to reflect the planks texture in the Texture Update.

World generation

Caves
  • Tweaked the cave sizes.
Lush caves
  • Reduced the amount of floating water in lush caves.
Blobs
  • Slightly increased the frequency of diamond ore blobs.
  • If any ore replaces tuff, it will now be deepslate ore.

Gameplay

Freezing
  • Frozen hearts now have a different texture in Hardcore mode to reflect the regular heart texture.
Spectator mode
Subtitles
  • Added subtitles for amethyst blocks chiming.
  • Added subtitles for waxing and removing wax from copper blocks.
    • These are "Wax on" and "Wax off", but are not triggered in-game.[37]
  • Changed the subtitles for stripping logs and wood from "Axe scrapes" to "Axe strips".
    • "Axe scrapes" is now used for copper blocks. However, it is not triggered in-game.[37]

General

Tags
  • Added cave vines and cave vines plant to the climbable block tag.
  • Added tuff to the deepslate_ore_replaceables block tag.
  • Added tinted glass to the impermeable block tag.
  • Removed tuff from the stone_ore_replaceables block tag.

Fixes

128 issues fixed
From released versions before Java Edition 1.17
  • MC-1483 – Snow covered grass/podzol/mycelium block side texture does not match original block.
  • MC-9591 – Players are able to create ghost lily pads.
  • MC-12363 – Lava / water / powder snow bucket desync when using it while rapidly turning.
  • MC-70850 – False negatives during occlusion culling.
  • MC-71530 – Spectators can't see through lava.
  • MC-86645 – Scroll bar goes higher than chat overlay.
  • MC-145501 – Librarian and zombie librarian torso top texture is incorrect.
  • MC-150054 – Spectral arrow texture on item and entity aren't consistent.
  • MC-150784 – Brewing Stand bottle outline incorrect.
  • MC-154006 – Overworld wood signs use the outdated wood texture on all sides.
  • MC-160195 – Jungle door inventory texture is outdated.
  • MC-160388 – Painting back texture has not been updated with the texture update.
  • MC-169717 – Blocks in recipe book groups are rendered in front of item tooltips.
  • MC-195806 – Smoker's top and bottom textures have inconsistently colored pixels.
  • MC-197561 – Carved pumpkins and jack o'lanterns create swastikas.
  • MC-197883 – Jigsaw Structures causing DataFixer spam.
  • MC-198805 – Floating pixel in the tailfin of a guardian/elder guardian.
  • MC-202186 – Houses in Zombie Villages disappear when spawned using /locate.
  • MC-202760area_effect_cloud does not enforce a maximum radius.
  • MC-212123 – Player lighting is inconsistent in the inventory and appears darker on the front.
  • MC-214568 – Setting a lectern on fire causes z-fighting.
  • MC-216227 – Sugar cane item texture is no longer accurate from 13w36a forward.
From the Java Edition 1.17 development versions
  • MC-203554block.amethyst_block.chime has no subtitle.
  • MC-203561 – Amethyst crystal cluster drops items when block is moved directly by a piston without actually breaking the block.
  • MC-203623 – Inconsistency: Breaking amethyst crystals with hands doesn't drop the item, but breaking the block they are placed on drops them.
  • MC-203676 – Tinted Glass suffocates entities inside of it.
  • MC-203753 – Spyglass use statistic never increases.
  • MC-203918 – Mobs can spawn on tinted glass.
  • MC-204016 – When filling a lava/powder snow cauldron with lava/powder snow, it is placed on the ground instead of in the cauldron.
  • MC-204115 – Pushing an amethyst cluster off of a block with a 1-tick pulse using a sticky piston doesn't drop any items.
  • MC-204862 – Tinted glass is not included in the impermeable tag.
  • MC-205913 – Lightning rod can spawn skeleton horses with skeletons.
  • MC-206588 – Blocks dripstone can be attached to are inconsistent.
  • MC-206787 – World Border is rendered upside down.
  • MC-206805 – World border texture moves up and down with the player.
  • MC-207557 – Frozen hearts in hardcore mode look identical to frozen hearts in survival mode.
  • MC-208295 – Moving water with a piston and amethyst cluster.
  • MC-211513 – Trident returning to owner not in the same world can cause permanent player kick.
  • MC-212226 – Bone Meal can still be used on a Glow Lichen when it is unable to grow.
  • MC-212410 – Cannot compost glow lichen.
  • MC-213269 – Waxed Copper Block cannot be crafted back into ingots.
  • MC-213271 – Parity issue: Copper blocks cannot be waxed by either using honeycomb items on them or using dispensers with honeycombs.
  • MC-213583 – Crash upon importing world generation settings with over 256 layers.
  • MC-213743 – Spectators can't see through powder snow.
  • MC-213764 – Removing the block supporting a spore blossom allows the spore blossom to float.
  • MC-213765 – Cave vine blocks are inconsistent in ID from other similar blocks.
  • MC-213768 – Removing the support block for hanging roots allows it to float.
  • MC-213778 – Cave vines cannot be climbed.
  • MC-213782 – Cave vines do not slow you down like other vines.
  • MC-213798 – Cave vines head and body emit different light levels.
  • MC-213816 – Hanging roots don't get destroyed by flowing water.
  • MC-213886 – Bone meal cannot be used on dripleaf stems.
  • MC-213911 – Cave vines body and cave vines head share the same name.
  • MC-213980 – Moss appropriate tool is axe rather than hoe.
  • MC-214290 – Crash upon importing world generation settings with a layer that is less than 0 blocks high.
  • MC-214868 – Big dripleaf won't drop the item if the top is underwater.
  • MC-214951 – Superflat worlds start generating at negative coordinates, causing a dark horizon.
  • MC-215036 – Snow layers in "Snowy Kingdom" superflat preset generate 64 blocks above the ground.
  • MC-215384 – Azaleas cannot be used as a fuel.
  • MC-215417 – Sky going dark y level ignores data pack dimension y axis limits (minecraft:overworld effects).
  • MC-216018 – Redstone Ready and Water World presets have the default spawn point at wrong Y-level.
  • MC-216134 – Gilded blackstone texture does not match the new side texture of blackstone.
  • MC-216184 – Player takes no fall damage on blocks above Y=316.
  • MC-216737 – When replacing tuff, ores still generate with a "stone" background below Y=0.
  • MC-216945 – Teams become dysfunctional when any entity leaves the team.
  • MC-216965 – Flat "slices" of terrain generating in cracks.
  • MC-217303 – Potential optimization target in DepthBasedReplacingBaseStoneSource.
  • MC-217546stat.fallOneCm is not updated when falling onto a block above Y=316.
  • MC-217802 – Some blocks generate at wrong Y height in a superflat world.
From the previous development version
  • MC-218587 – Lightning rod still can't be waterlogged.
  • MC-218594 – Debug chunk borders don't render properly.
  • MC-218596 – Debug pie is blacked out.
  • MC-218597 – Water has no fog anymore.
  • MC-218603 – Screen turns dark grey when switching dimension.
  • MC-218604 – Hanging roots can generate hanging on other hanging roots, making them float.
  • MC-218609 – Mipmapping causes some block faces to become too dark.
  • MC-218610 – Banners are unimpacted by light levels.
  • MC-218626 – Cannot enchant items.
  • MC-218633 – Smooth lighting has brighter outlines.
  • MC-218635 – With fast graphics, the freezing overlay renders black, and covers the whole screen black in first person.
  • MC-218640 – Broken spyglass overlay on fast graphics.
  • MC-218641 – Red vignette shown when outside the world border is too intense.
  • MC-218645 – The carved pumpkin overlay turns the screen completely black when using fast graphics.
  • MC-218652 – The green nausea overlay no longer renders.
  • MC-218653 – Glowing effect no longer changes to team color.
  • MC-218655 – Floating water generates excessively in lush caves.
  • MC-218660 – The nether portal overlay no longer renders, whilst using fast graphics.
  • MC-218695 – Shulkers do not flash red when hurt or killed.
  • MC-218712 – Debug pie has purple box when moving an enchanted item.
  • MC-218713 – Right clicking to open alternate recipes does not show the recipes.
  • MC-218729 – Noise cave entrances cause unnatural, smooth edges in terrain.
  • MC-218734 – Caves generate with very blocky areas.
  • MC-218748 – At sunset, a blue line appears in the northern and southern skies.
  • MC-218753 – Ambient occlusion of the player seen in the survival inventory has changed.
  • MC-218765 – Glowing effect no longer renders around translucent pixels.
  • MC-218793 – Two white lines appear on the Mojang loading screen.
  • MC-218817 – Cave Vines can generate without supporting blocks.
  • MC-218825 – M1 ARM Macs crash when using Fabulous Graphics mode as was the case in older versions, but no lack of support warning is shown.
  • MC-218830 – World border is white.
  • MC-218834 – You can see block hitboxes very clearly under powder snow/lava.
  • MC-218845 – Mojang logo screen flashes blue before changing to red.
  • MC-218852 – World border is occasionally shown as a solid color upon being loaded.
  • MC-218877 – The red flash when a mob is hurt/killed appears to be slightly dimmed.
  • MC-218881 – When selecting text in the end, the sky gets highlighted.
  • MC-218911 – The background of hover-event text becomes blue when text is selected in an anvil or chat.
  • MC-218945 – Spyglass has a gradient effect while freezing.
  • MC-218979 – Cave ceilings and floors sometimes too flat or blocky.
  • MC-218988 – Fire is rendered dark in the player/horse/llama UI.
  • MC-218990 – Transparency buffers start with blue background instead of empty background.
  • MC-219002 – The wither's wither armor has a blue aura around it.
  • MC-219006 – The background opacity of subtitles and chat, are affected by a potion effect UI fading out.
  • MC-219014 – Charged creeper layer makes clouds and entities invisible.
  • MC-219036 – World border is shown as a solid color when picking up items or experience orbs.
  • MC-219039 – World border does not render when below the world.
  • MC-219049 – Reloading resource packs no longer shows the progress bar while the transparent background is shown.
  • MC-219105 – Entity hitboxes can be seen whilst inside of powder snow/lava.
  • MC-219108 – Chat scroll bar is offset.
  • MC-219111 – Social interactions scroll bar appears broken.
  • MC-219126 – Spyglass allows looking through blocks.
  • MC-219155 – Cast fishing line is disconnected from the rod.
  • MC-219180 – Slime blocks, honey blocks, stained glass, and ice are fully lit when moved by pistons.
  • MC-219208 – Using enchanted items allows looking through blocks.
  • MC-219212 – Entity shadows can be seen whilst inside of powder snow/lava.
  • MC-219224 – The background opacity of command syntax help is affected when highlighting text.
  • MC-219278 – Being inside of a block no longer shows the block texture.
  • MC-219281 – Dying ender dragon is rendered too bright.
  • MC-219392 – Lead/fishing line is no longer affected by the fog from powder snow/lava.
  • MC-219597 – End portal and end gateway textures expand as the player travels further from the block.

21w13a

21w13a is the fifteenth snapshot for Java Edition 1.17, released on March 31, 2021,[38] which adds goats and light blocks, as well as tweaks to caves and blob generation, and fixes many bugs.

Additions

Blocks

Light
  • A new waterloggable source of light, originally from Bedrock Edition.
  • Behaves like air and it is visible only when the item is held, similar to barriers.
    • Unlike barriers, lights can only be targeted when holding the item.
  • Obtainable only with /give.
  • Right-clicking cycles its light level.

Mobs

Goats
  • Spawn in mountains.
    • Currently a place holder until the new mountains are added.
  • Do not drop anything.
  • Can jump up to 10 blocks high.
  • Can be tempted and bred using wheat.
  • A bucket can be used on them to get milk.
  • They have a 2% chance of spawning as a screaming goat, with different sounds.

General

The alternative Mojang Studios loading screen that appears when the Monochrome Logo option is turned on

Accessibility
  • Added an alternative solid black background color for the Mojang Studios loading screen, toggleable with the “Monochrome Logo” accessibility category in options.
Tags
  • Added the dirt block tag.
    • Contains dirt, coarse dirt, podzol and rooted dirt.
    • Grass, tall grass, ferns, tall ferns, sweet berry bushes, saplings, flowers, azaleas, sugar cane, and dead bushes can be placed in blocks in this tag.
    • Pumpkins and melons can grow into blocks in this tag.
  • Added the snow block tag.
    • Contains snow, snow blocks and powder snow.
    • Blocks in this tag turn blocks with a snowy variant below them (like grass) into said snow variant.
  • Added the axolotl_hunt_targets entity type tag.
  • Added the freeze_hurts_extra_types entity type tag.
  • Added the freeze_immune_entity_types entity type tag.

Changes

Blocks

Candle
Flowering Azaleas and Flowering Azalea Leaves
Lightning Rod
  • Bottom texture is now corrected.
Powder Snow
  • Powder snow's hardness was slightly increased, from 0.1 to 0.25.
  • Freeze time has decreased to 7 seconds and hurt frequency has decreased to 2 seconds.
  • Entities on fire now melt powder snow when colliding, extinguishing themselves in the process.
  • Increased vertical movement speed within powder snow (entities fall through powder snow faster).
  • Mobs now shake when they are fully frozen.
  • Mobs that are damaged by freezing can no longer spawn on powder snow.
Rooted Dirt
  • The top texture is now randomly rotated.
  • Shovels are now the correct tool for collecting.
  • Grass, ferns, flowers, dead bushes, saplings and bamboo can now be planted on rooted dirt.
  • Can now be turned into dirt path blocks by using any type of shovel.
  • Now placed near other dirt variants in the Creative tab.
Texture mappings

Items

Leather Boots
  • Now prevent fall damage when landing on powder snow, to match the behavior in Bedrock Edition.[41]
Leather Horse Armor
  • Now protects horses from freeze damage.
    • Although horses are the only entities that can wear leather horse armor through gameplay, leather horse armor worn by other entities through commands will also be protected.
Suspicious Stew
  • Can now be eaten even if the player is at full hunger.

Mobs

Axolotl
  • Axolotls now spawn naturally in underground water sources.
  • Axolotls are now always hostile towards drowned, guardians and elder guardians.
  • Axolotls will now "hunt" squids, glow squids, tropical fish, cod, salmon, and pufferfish.
    • After killing one of these mobs, there is a two minute cooldown before they can hunt again.
    • They will prioritize targeting hostile mobs first before hunting.
  • Axolotls give Regeneration I and remove Mining Fatigue when a player kills a mob that is in combat with an axolotl.
  • Blue, cyan, gold and pink axolotls have had the textures of the outlines on their tails slightly changed.
  • Cyan, gold and pink axolotls have had the textures of the frills on their head slightly changed.
  • Axolotls now save their NBT tags (such as age, color and health) when stored in a water bucket.
Blaze, magma cube, and strider
Elder Guardians, guardians, and polar bears
  • Now drop cooked cod or salmon instead of raw cod or salmon if on fire when killed or killed by a fire source.
Endermen
  • Can now pick up rooted dirt, flowering azaleas and flowering azalea leaves.
Glow Squid
  • Glow squids now spawn naturally in underground water sources.
Husk, zombie, and zombie villager
Polar bear, snow golem, and stray
  • Are now immune to freezing.
Skeleton
  • Skeletons converting to strays now only require the 7 seconds it takes for an entity to be fully frozen to begin converting, instead of the 30 seconds it took before.
Villagers
Wandering trader

World generation

Caves
  • Made carvers less likely to be too flat to walk through.
  • Increased likelihood of huge caves (very large cheese caves).
  • Reduced likelihood of tall 1-block thin pillars.
  • Changes were made to make the cheese caves more varied in aspect and size.
  • Deepslate blobs can now be found between heights 0 and 16.
  • Dripstone clusters can now be found rarely in regular caves.
End Islands
  • Due to a change in the height of the end, end islands are significantly taller. This behavior is not intended.[42]
    • As a result, end spikes and the ender dragon are buried within the main island. End cities may be missing upper sections, as they might collide with the world height limit.
Mineshafts
Ore
  • Copper ore now generates uniformly between levels 0 and 63.
  • Added large diamond ore blobs, generated same with the range and method of the regular one.
  • It was intended for iron ore blobs to be more common, however this is not the case.[43]
Shipwrecks

Gameplay

Advancements
  • Goats and axolotls are now required for "Two by Two".
    • Axolotls have always been available for "The Parrots and the Bats" and goats can now be used as well, though no changes were made to the advancement to let this happen.
  • The advancement for obtaining diamond armor is now capitalized as "Cover Me with Diamonds", as opposed to "Cover Me With Diamonds".
Build limit
  • The message for letting the player know they are attempting to build beyond the build limit no longer says "blocks" at the end.
Spawning
  • Added a new mob cap category, underground water creature.
    • Used by axolotls and glow squids.
    • Have a cap of 5, are friendly, are not persistent, and despawn at 128 blocks or more from the player.
Subtitles
  • Subtitles for waxing, removing wax, and removing oxidation from a block of copper now display.
    • These were introduced in the previous snapshot, but not correctly implemented.[44]

General

Code
  • Unused parts of code (unused static fields and methods) are no longer removed.[verify]
    • Although this does not affect the game itself, it adds more information for modders.
Materials
  • Removed the coral material.
  • Added the moss material.
Tags
  • Changed the bamboo_plantable_on, and enderman_holdable block tags to use the dirt block tag, removing other mentions of dirt blocks from the tags.
  • Added all copper slab and stair variants to the slabs, and stairs block and item tags, respectively.
  • Added flowering azalea leaves and flowering azaleas to the small_flowers block and item tags.
  • Changed the axolotl_always_hostiles entity type tag to have the previous contents of the axolotl_tempted_hostiles tag, as well as adding elder guardians.
    • The previous contents of the tag have been added to axolotl_hunt_targets.
  • Removed the axolotl_tempted_hostiles entity type tag.
  • Added leather horse armor to the freeze_immune_wearables item tag.
Textures
  • Removed some unused textures, including:
    • The "calibrated sculk sensor" textures.
    • The texture for the zombie villager before 1.9.
    • The "arrow.png" placed outside of the arrow folder that included the purple arrow texture.
    • The ruby item texture.
    • The piglin leather armor models.
    • The footprint particles.

Fixes

122 issues fixed
From released versions before Java Edition 1.17
  • MC-3366 – End portal appears transparent from below.
  • MC-70738 – Killing guardian with lava does not give cooked fish.
  • MC-79888 – Beacon beam can be seen when you have blindness effect.
  • MC-102269 – Polar bears drop raw fish instead of cooked fish when killed with fire or lava.
  • MC-108636 – There are a number of unused texture files.
  • MC-123587 – Kicked from the game when reaching y levels over 30,000,000.
  • MC-124667 – Air can be used in custom recipes, causing a crash.
  • MC-136776 – Some NBT tags are not kept when fish or axolotl mobs are caught in water buckets.
  • MC-167853 – Observer doesn't detect when a grass block changes to dirt if a tree grows on top.
  • MC-167977 – Podzol generated from giant spruce trees is not snowy if it has snow above it.
  • MC-174701 – Leash knot sound effect plays when loading singleplayer world.
  • MC-187544 – 'Cover Me With Diamonds' advancement improperly capitalized.
  • MC-190774 – Stonecutter saw spins both ways simultaneously.
  • MC-194183 – Some experience points do not go towards Mending repair, even if the Mending gear is not fully repaired.
  • MC-195640 – Suspicious stew inedible with full hunger.
  • MC-197073 – Turtles laying eggs on red sand produce normal sand particles.
  • MC-199065 – Zombies that die while on fire do not drop baked potatoes.
  • MC-199237 – Back of ladder is incorrectly mirrored.
  • MC-199239 – Vines appear incorrectly mirrored when viewed from behind.
  • MC-199242 – Texture planes of crop models appear incorrectly mirrored from behind.
  • MC-201748 – Chain model planes are incorrectly mirrored on the rear.
  • MC-201751 – Chain section on lanterns is incorrectly mirrored from behind.
  • MC-201753 – Sea pickle green top sections do not render correctly from behind.
  • MC-214589 – End gateway exit portals can be set to high coordinates, kicking the player.
  • MC-214693 – Tripwire texture is not mirrored correctly from behind.
  • MC-214694 – Tripwire which is part of a tripwire hook is not mirrored correctly from behind.
  • MC-214879 – Selecting nothing and pressing Ctrl + C clears clipboard.
  • MC-218888⇧ Shift Clicking items into inventory prevents the relevant advancement from triggering.
From the Java Edition 1.17 development versions
  • MC-203553 – Water bottle doesn't extinguish candles.
  • MC-203605 – Lightning rod bottom texture is mapped incorrectly.
  • MC-203617 – Can't "Pick Block" cauldrons with liquid or powdered snow inside.
  • MC-203838 – Aiming a spyglass with a loaded crossbow in offhand creates weird third person effect.
  • MC-203847 – Waterlogged candles can be lit.
  • MC-204133 – Candle extinguishing particle appears offset from the candle.
  • MC-204430 – Cauldrons filled with water, lava or powder snow cannot be used as a workstation for villagers.
  • MC-205060 – Powder snow does not cause underlying grass, mycelium or podzol to appear snowy.
  • MC-205083 – Mobs wearing leather boots spins around when walking on powdered snow.
  • MC-205106 – Mobs that get damaged by powder snow can spawn inside powder snow.
  • MC-205131 – Landing on powder snow while wearing leather boots inflicts fall damage on Java, but not on Bedrock.
  • MC-205143 – The particles produced when extinguishing a campfire are misplaced.
  • MC-205158 – Powder snow inside textures are not correctly mirrored.
  • MC-205169 – Mobs don't path find across powder snow blocks when not wandering.
  • MC-205302 – Using /setblock to place a structure block defaults to save mode, unlike placing one by hand.
  • MC-205613 – Skeletons in powder snow spin when aiming at the player.
  • MC-205885 – Endermen holding water, lava or powder snow cauldrons don't drop cauldrons.
  • MC-205914 – Placing turtle egg/sea pickle onto turtle egg/sea pickle while sneaking doesn’t place it next to it, although placing candle onto candle does.
  • MC-205918 – Experience orb stacks that were used in the mending process lose their experience amount, even if the stack is still larger than one.
  • MC-206567 – Stalagmite gets all destroyed at the same time when the bottom block gets destroyed.
  • MC-208075 – Copper slabs and stairs are not included in the #minecraft:slabs and #minecraft:stairs tags.
  • MC-208551 – Calibrated Sculk Sensor are unused in-game files.
  • MC-208588 – Axolotls change color when released from bucket / axolotl entity data isn't stored in the bucket item.
  • MC-208594 – Axolotls aren't required for the "Two By Two" advancement.
  • MC-208647 – Axolotls don't attack elder guardians.
  • MC-208695 – Semi-transparent pixels on axolotl textures.
  • MC-208703 – Axolotls don't give regeneration or remove mining fatigue.
  • MC-208745 – Explorer maps & filled maps turn blank after entering the nether or end.
  • MC-209371 – Can't cut stacks in half in furnace output.
  • MC-212221 – Glow item frames are rendered dark when a light source is nearby.
  • MC-212277 – Glow lichen viewed from a distance causes z-fighting issues.
  • MC-212305 – Back face of glow lichen is not correctly mirrored from behind.
  • MC-212736 – Some world border faces are rendered mirrored, resulting in incorrect corners.
  • MC-213552 – Shulker hitbox does not immediately rotate after the shulker visually rotates.
  • MC-213769 – Rooted dirt is far from other dirt variants in the Creative inventory.
  • MC-213771 – Rooted dirt is in decorations tab.
  • MC-213772 – Certain faces of azalea are not culled by other blocks.
  • MC-213777 – Azalea and flowering azalea z-fight when placed next to blocks.
  • MC-213783 – Strays freeze in powder snow.
  • MC-213789 – Water behaves as if moss blocks were air.
  • MC-213815 – Grass, ferns, flowers, bushes, saplings and bamboo cannot be placed on top of rooted dirt.
  • MC-213837 – Can't pick block big dripleaf stem.
  • MC-213841 – Signs, banners, paintings & item frames cannot be placed on moss.
  • MC-213860 – Farmland/dirt path don't convert to dirt when moss is placed above.
  • MC-213877 – Cannot turn Rooted Dirt into a Dirt Path.
  • MC-213878 – Using bone meal on a small dripleaf shows breaking particles.
  • MC-213899 – Big Dripleaf can be rotated incorrectly by breaking and replacing it.
  • MC-213907 – Skeletons don't have a shaking animation while converting to strays.
  • MC-213958 – Azalea bushes connect to walls and fences.
  • MC-214049 – Mining rooted dirt is slightly faster than mining other dirt blocks.
  • MC-214073 – The azalea's side textures are partially cut off.
  • MC-214097 – Cake cannot be placed on top of a moss block.
  • MC-214135 – Converted moss blocks do not update redstone.
  • MC-214181 – Rooted dirt cannot be picked up by endermen.
  • MC-214374 – Redstone doesn't connect vertically on moss blocks.
  • MC-214586 – Rooted Dirt has no assigned tool.
  • MC-214639 – Rooted dirt is not randomly rotated.
  • MC-214695 – Big dripleaf texture mirrored incorrectly from underneath.
  • MC-214696 – Small dripleaf texture mirrored incorrectly from underneath.
  • MC-214698 – Azalea top texture is mirrored incorrectly.
  • MC-214804 – Big dripleaf continuously makes tilting sound when standing on it while it's powered by redstone.
  • MC-214818 – Waterlogged pointed stalagmites don't drop when their support block is broken.
  • MC-214858 – Powered big dripleaf play tilting sounds when blocks are changed nearby.
  • MC-214901 – Rain passes through moss blocks.
  • MC-214965 – Maximum building height is 319, but warning message says 320.
  • MC-215898 – Deepslate hardness does not match some of its variants.
  • MC-216820 – Cobbled Deepslate Slab uses the stone sounds instead of the deepslate sounds.
  • MC-217749 – Small Dripleaf can't be placed on Rooted Dirt while waterlogged.
  • MC-218701 – Axolotls aren't able to spawn in lush caves.
  • MC-219054 – Can type text into anvil text field without putting an item in it, preventing you from closing the UI with E.
  • MC-219103 – The eyes of some entities can be seen through powder snow/lava.
  • MC-219203 – Mineshaft support legs can generate in lava.
  • MC-219240 – Inconsistency: cobbled deepslate does not take longer to mine than deepslate.
  • MC-219635 – There is no sound when defrosting from fire/lava (vanilla parity).
  • MC-219740 – Spyglass overlay broken while in water with fast graphics.
  • MC-219937 – Parity issue: Clouds are at y=192.
From the previous development version
  • MC-219850 – There is no sound or subtitle for applying/removing/scraping wax or oxidation.
  • MC-219868 – Opening a UI darkens the background less than it used to.
  • MC-219906 – Minecraft crashes when spectating an entity submerged in water.
  • MC-219920 – Amethyst Blocks can no longer be gained by mining them.
  • MC-219933 – Shulker heads do not flash red when taking damage / when killed.
  • MC-219960 – Moss can still be mine faster with axe.
  • MC-219964 – Torches can be placed on azalea.
  • MC-219973 – Hanging Roots takes about a second to be mined.
  • MC-220068 – Experience orbs are no longer affected by the fog from powder snow/lava.
  • MC-220069 – Wither/creeper armor is no longer affected by the fog from powder snow/lava.
  • MC-220070 – Lightning is not affected by the fog from powder snow/lava.
  • MC-220157 – String is not affected by light levels.
  • MC-220174 – With graphics set to Fabulous!, blocks such as honey, slime and stained glass appear lit up in third person mode.
  • MC-220269 – Shader texture coordinate wrapping mode causes screen effects like glowing to wrap where they shouldn't.
  • MC-220335 – Beacon beam is not affected by water fog.
  • MC-220339 – Beacon beam is not affected by the fog from powder snow/lava.
  • MC-221146 – Water fog still very subtle making water appear too clear in the distance.
Private issues

21w14a

21w14a is the sixteenth snapshot for Java Edition 1.17, released on April 7, 2021,[46] which adds raw metals and the ability to wax oxidized copper and cut copper, as well as fixes some bugs.

Additions

Blocks

Block of Copper
  • Added waxed variants of oxidized copper, cut copper, and their variants.

Items

Raw metal

Changes

General

Tags
  • Added waxed oxidized cut copper stairs and slabs to the stairs, and slabs block and item tags, respectively.
  • Added raw gold to the piglin_loved item tag.

Fixes

20 issues fixed
From released versions before Java Edition 1.17
  • MC-73104 – Server address field editing bug.
  • MC-207173 – Entering only colons into the multiplayer "Direct Connection" menu and pressing ↵ Enter crashes the game.
From the Java Edition 1.17 development versions
  • MC-203854 – Fishing rod texture always looks like it has been cast when in the player's hand.
  • MC-210155 – Command block output no longer is displayed immediately after running a command.
  • MC-213665 – Crash upon attempting to generate a world with a height of 0 blocks.
  • MC-214287 – Crash upon entering a nether portal when logical_height is set to 0 and min_y is set to 80 or greater.
  • MC-214823 – Ice spikes can generate in caves.
  • MC-215120 – World-gen datapacks can cause crashes when first generating world.
  • MC-216649 – Default type surface builders don't generate below y=50.
  • MC-216697 – Having min_y set to lower than -64 causes either a crash or the world not to behave correctly if the height limit wasn't modified.
  • MC-217702 – Game crashes (ArrayIndexOutOfBoundsException) during world feature placement / decoration.
  • MC-218669 – Mineshafts don't connect to the caves ceiling in case of a lava lake and are floating.
  • MC-219849 – Fishing does not animate or render the rod, line or bobber anymore.
  • MC-220054 – Crafting preview for furnaces/blast furnaces cycle through Deepslate Copper, Emerald & Coal Ore.
  • MC-220066 – Barrels can be duplicated by blowing them up while they are open.
  • MC-220652IndexOutOfBound exception hard crash when loading a simple custom dimension datapack.
From the previous development version
  • MC-221549 – Parity Issue: there is no waxed oxidized copper.
  • MC-221553 – The end dimension generates differently than it did previously.
  • MC-221586 – Excessive pillager spawning in pillager outposts.
  • MC-221673 – Ocean monuments are completely empty.

21w15a

21w15a is the seventeenth snapshot for Java Edition 1.17, released on April 14, 2021,[47] which adds blocks of raw metal and the ability for goats to ram mobs and armor stands, as well as reorders some of the items in the Creative inventory menu. It also reverts most changes to world generation made in previous snapshots, such as height limit and cave types. Due to the technical challenges on the new cave generations and the effects of the COVID-19 pandemic on the developers, these changes will be moved to Java Edition 1.18.[48][49][50]

Additions

Blocks

Blocks of Raw Metal
  • Added block of raw iron, block of raw copper and block of raw gold.

Non-mob entities

Marker
  • Added the Marker entity meant for custom use cases like map making and data packs.
    • Only exists on the server side, is never sent to clients.
    • Does not do any updates of their own.
    • Has a  data compound field that can contain any data.

Command format

/debug function

  • New debug subcommand executes command with same syntax as function.
    • Every executed command, message (even if it would be normally invisible), result or error is stored to file.
    • Cannot be run from inside functions.

Sounds

Bone Meal
Goat
  • Added various new sounds for screaming goats.

General

server.properties arguments
  • resource-pack-prompt
    • Adds a custom message to be shown on resource pack prompt when require-resource-pack is used.
    • Expects chat component syntax, can contain multiple lines.

Changes

Blocks

Gold Ore, Lapis Lazuli Ore, Deepslate Copper Ore, Deepslate Lapis Lazuli Ore
  • Slightly tweaked the textures of these blocks.

Items

Raw Metal
  • Tweaked the textures of raw ore items.

Mobs

Goats
  • Goats now avoid walking on powder snow.
  • Goats can now ram other mobs and armor stands to knock them a few blocks.
    • Creepers don't explode when attacked by a goat.
Axolotl
  • Axolotls gain one and a half minutes of moisture when a splash water bottle is thrown at them.

World generation

World height
  • World height increase has been reverted and is now once again 256 blocks (from Y=0 to Y=255).
  • Worlds created in snapshot 21w05b or any earlier version can now once again be opened.
  • Worlds created in any version between snapshot 21w06a and 21w14a can no longer be opened.
    • This can be bypassed by setting the data version in level.dat to anywhere from 2692 and below, to 2709 or higher. However, this may cause issues.
  • Creating a new world with the Prototype Datapack (or putting the datapack in an existing world with the bypass above) can try out the world generation for the later update using a datapack which activates the changes as an experimental custom world.
Caves
  • Noise caves and aquifers have been switched off.
  • Cave and ravine carvers have been returned to their old settings.
  • Crack carvers have been switched off.
Ore distribution
Tuff
  • Now generates in blobs from y=0 to y=16.

General

Title screen
Creative inventory

Fixes

39 issues fixed
From released versions before Java Edition 1.17
  • MC-183540 – Ancient debris is not grouped together with other ores in the Creative inventory.
  • MC-202543 – Ancient debris comes after netherite block in creative inventory.
  • MC-203300 – Nether Gold Ore is not grouped with Nether Quartz Ore in creative inventory.
From the Java Edition 1.17 development versions
  • MC-203855 – A geode configured_feature causes a crash when use_alternate_layer0_chance is used with no entries in inner_placements.
  • MC-208816 – No terrain nor feature generation currently supports negative Y values.
  • MC-212145 – Summoning Glow Lichen using /setblock doesn't place any lichen but creates light until the block is updated.
  • MC-212273 – Glow Lichen doesn't render when being held by an Enderman.
  • MC-214783 – Oceans generate with stone floors.
  • MC-214792 – Underwater canyons do not have obsidian/magma/bubble column generation.
  • MC-215073 – Dungeons are extremely rare in 21w06a.
  • MC-215444 – Natural hostile mob spawns are much less frequent.
  • MC-215836 – Deepslate uses the same color as stone on maps.
  • MC-215844 – Stone still generates around lava pools at low levels.
  • MC-216015 – Ocean Monuments in Water World presets don't spawn correctly.
  • MC-216588 – Feature placement - java.lang.IllegalArgumentException: bound must be positive.
  • MC-216961 – Hundreds of "Empty range decorator: cxd@3ea95f79 [0--8]" log entries when creating and loading chunks in "Overworld", "Tunnelers' Dream" and "Desert" superflat preset.
  • MC-217254 – Desert temples in superflat generate way too high.
  • MC-217645 – Dripstone block is not grouped with other stone blocks in the Creative inventory.
  • MC-218022 – Blocks of copper are not grouped with other metal blocks in the Creative inventory.
  • MC-218023 – Netherite blocks are not grouped with iron and gold blocks in the Creative inventory.
  • MC-218024 – Amethyst blocks are not grouped with other gem blocks in the Creative inventory.
  • MC-218588 – Cracked deepslate bricks & tiles are in the incorrect position in the creative inventory.
  • MC-218698 – Infested deepslate makes the old "stone" sounds.
  • MC-218705 – Deepslate emerald ore is separated from other deepslate ores in the creative inventory.
  • MC-218749 – Deepslate coal ore doesn't drop experience.
  • MC-218944 – Copper ore and deepslate copper ore have inconsistent textures.
  • MC-219924 – Lapis Lazuli Ore and deepslate Lapis Lazuli Ore have inconsistent textures.
  • MC-219972 – Deepslate gold ore has an inconsistent pixel.
  • MC-221501 – Water splash potions don't give the axolotl 1.5 minutes of moisture.
  • MC-221552 – Goat subtitles showing as translation key.
  • MC-221633 – Goats sink in water and lava.
  • MC-221680 – The nether fog behaves rarely when going deeper than y=0.
  • MC-221718 – Lava fog repeatedly fails to render each block at certain y-levels.
  • MC-221728 – Goats have duplicated sound ids.
  • MC-221798 – Blindness doesn't render correctly.
  • MC-222104 – Beacon beam fog is incorrectly computed.
  • MC-222266 – Goats don't attack.
From the previous development version
  • MC-222522 – Nether Gold Ore is no longer smeltable.
  • MC-222531 – Tuff blobs doesn't generate between heights 0-16.

21w16a

21w16a is the eighteenth snapshot for Java Edition 1.17, released on April 21, 2021,[54] which adds dripstone growth and the ability to grow azalea trees.

Additions

Gameplay

Pointed dripstone growth
  • If a stalactite is hanging from a dripstone block with a water source above, it will slowly grow both the stalactite from above and a stalagmite from below.
    • Growth speed is random but very slow; a single growth step can take several in-game days.
  • A stalactite will only grow up to 7 blocks long.
  • A stalactite will only cause stalagmite growth if the floor or stalagmite below is within 10 blocks.
  • If the stalactite tip is inside water it won’t drip, and therefore will not trigger any growth.
  • If the stalagmite tip is inside water or there is a fluid between the two dripstone blocks, it will not receive the water drops, and therefore will not be grown by a dripping stalactite.
    • A stalagmite or stalactite will never grow into a fluid.

General

Tags
Language
  • Added Russian (Pre-revolutionary) language.
  • Added Chinese Traditional (Hong Kong) language.

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Ore veins
  • Large rare snaking collections of ore found underground.
    • Copper mixed with granite is found at and above Y=0; iron mixed with tuff is found below Y=0.

Changes

Blocks

Azalea and flowering azalea
  • Can now be fertilized with bone meal to form Azalea Trees.
Block of raw iron and block of raw gold
  • Tweaked the textures of these blocks.
Emerald ore
Infested deepslate
  • Can now have random texture rotation like deepslate.
Small dripleaf
Grass block, mycelium, moss block
  • Grass, tall grass, ferns, tall ferns, sweet berry bushes, saplings, flowers, azaleas, sugar cane, dead bushes, and bamboo can now be placed on these blocks.
  • Pumpkins and melons can now grow onto these blocks.
  • Endermen can now pick up these blocks.

Items

Raw metal
  • Tweaked the texture of raw ores.

Gameplay

Recipe book
  • The recipes for stonecutting diorite into polished diorite slabs and stairs now unlocks when the player has diorite as opposed to polished diorite.

General

Statistics
  • Renamed the statistic for play time to play_time.
  • Included time when game paused for "Time with World Open" (total_world_time).
Resource pack prompt
  • Users who previously permanently declined server resource packs will now still be shown the pack prompt if the pack is mandatory, instead of being immediately disconnected.
Tags
  • Added grass blocks, mycelium, and moss blocks to the dirt block tag.
  • Tweaked some tags to no longer unnecessarily mention blocks if they're in the dirt block tag.
  • Tweaked the lush_ground_replaceable block tag to call the moss_replaceable tag instead of the lush_plants_replaceable tag, as well as adding gravel and sand.
  • Removed the lush_plants_replaceable block tag.
Textures
  • Removed the unused rooted_vines_head.png texture.
  • Removed stray pixels from the recipe book GUI button.

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Aquifers
  • Aquifers below Y=0 will sometimes be made of lava.

Fixes

51 issues fixed
From released versions before Java Edition 1.17
  • MC-29522stat.playOneMinute adds a value of 1 every tick.
  • MC-55775 – Statistics screen sometimes doesn't show up to date information.
  • MC-111534 – The firework rocket use statistic doesn't count rockets used for elytra boosting.
  • MC-117653 – Recipes and advancements are not granted while most GUIs are open.
  • MC-136560minecraft.used:minecraft.elytra not functioning.
  • MC-136681 – Debug Stick use statistic increases when not allowed to use it.
  • MC-157116 – Food that are plantable counts towards using when right click on the ground.
  • MC-190128 – Using a flint and steel to ingite TNT is not tracked by the in-game stats.
  • MC-223558minecraft.used:minecraft.glass_bottle doesn't increase when taking water from a cauldron using a glass bottle.
  • MC-223563minecraft.used:minecraft.glass_bottle doesn't increase when collecting honey from a beehive or bee nest.
  • MC-223638minecraft.used:minecraft.shears doesn't increase when carving a pumpkin.
  • MC-223639minecraft.used:minecraft.shears doesn't increase when collecting honeycombs from a beehive or bee nest.
From the Java Edition 1.17 development versions
  • MC-203637 – Mobs don't avoid lava cauldrons when pathfinding despite of setting themselves on fire.
  • MC-205236 – Frozen State doesn't go away after respawn when on a server.
  • MC-208598 – Baby axolotls take damage when touching a solid block from below / eye height is outside of their hitbox.
  • MC-212113 – Glow Lichen can spawn underwater whilst not in a cave.
  • MC-212863 – Glow lichen use the same color as vines on maps.
  • MC-213927 – Using bone meal on a sapling that is on a moss block consumes bone meal, but doesn't grow into a tree.
  • MC-213998root_vines_head is unused in-game files.
  • MC-214129 – Several dirt blocks are not part of the #minecraft:lush_plants_replaceable tag.
  • MC-214293 – Mobs can spawn on top of azaleas.
  • MC-215270 – Moss requires air above a replaceable block to spread.
  • MC-216787 – Cobwebs in mineshafts can generate as if supported by chains.
  • MC-217411 – Anvils can become damaged when only falling one block.
  • MC-218590 – Error message for commands.give.failed.toomanyitems doesn't translate item name.
  • MC-218592 – Azalea trees can generate inside of lakes (even completely submerged in water).
  • MC-218614 – Inconsistency: Infested Deepslate can't be placed along axis.
  • MC-218637 – Inconsistency: Infested deepslate is not rotated randomly like normal deepslate.
  • MC-219155 – Cast fishing line is disconnected from the rod.
  • MC-219211 – Two mysterious white pixels can be seen in the upper left corner of the recipe book icon.
  • MC-219851 – Applying bone meal to a waterlogged big dripleaf stem creates more waterlogged big dripleaf stems.
  • MC-219903 – Silverfish infesting deepslate cause it to rotate.
  • MC-220024 – Shader compilation slows or fails the more asterisks are in a multiline comment.
  • MC-220307 – TrueType Font glyphs render incorrectly.
  • MC-220641 – Loyalty tridents disappear when your inventory is full.
  • MC-220887 – Shader includes fail to compile correctly when missing newline at end of file.
  • MC-221560 – Copper/Coal Ore in Deepslate Patches aren't Deepslate.
  • MC-221628 – Entities don’t stop glowing after losing the glowing effect.
  • MC-221652/teleport command to player does not work as in previous versions.
  • MC-221655 – Glow Squids and Axolotls Spawn in Monuments.
  • MC-222004 – Grass block isn't in the #dirt block tag.
  • MC-222517 – A large amount of slime or honey blocks will crash the game.
  • MC-222684 – You cannot grow azalea trees by bonemealing Azalea plants.
  • MC-222778minecraft.used:minecraft.candle doesn't increase when placing a candle on to a cake.
From the previous development version
  • MC-223260 – Emerald ore does not generate as intended.
  • MC-223553minecraft.used:minecraft.glow_ink_sac doesn't increase when applying a glow ink sac to a sign.
  • MC-223554minecraft.used:minecraft.ink_sac doesn't increase when applying an ink sac to a sign.
  • MC-223555minecraft.used:minecraft.COLOR_dye doesn't increase when applying a dye to a sign.
  • MC-223557minecraft.used:minecraft.bucket doesn't increase when taking powder snow, lava, or water from a cauldron using a bucket.
  • MC-223756minecraft.used:minecraft.powder_snow_bucket doesn't increase when filling a cauldron with a powder snow bucket.
  • MC-223757minecraft.used:minecraft.lava_bucket doesn't increase when filling a cauldron with a lava bucket.

21w17a

21w17a is the nineteenth snapshot for Java Edition 1.17, released on April 28, 2021,[55] which tweaks the raw metal block textures, adds noodle caves and fixes bugs.

Additions

General

Tags

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Noodle caves
  • A thinner, squigglier, tighter variant of spaghetti caves.
  • These are an improved version of the mesh caves announced around Minecraft Live.

Changes

Blocks

Amethyst cluster
  • Removed unused 'lit' blockstate.
Block of Raw Metal
Copper and Deepslate Copper Ore
  • Now drops 2–3 raw copper when mined, or more when using a tool enchanted with Fortune.
Copper block
Deepslate coal ore and deepslate copper ore
  • Now can spawn naturally.
Hanging roots
Small dripleaf

Mobs

Wither

World Generation

Ore

Gameplay

Recipe Book
  • The recipe for crafting mossy stone bricks from moss blocks or vines is now unlocked with moss blocks or vines, respectively, rather than mossy cobblestone.
  • The recipes for dyed candles are now grouped.
  • The recipes for smelting and blasting ores into their respective materials are now grouped by ore type (i.e. smelting coal ore and deepslate coal ore are grouped).
    • For iron, gold, and copper, the recipes for smelting and blasting their raw materials into ingots are also grouped with their respective ore smelting and blasting recipes.
  • The recipes for crafting copper ingots from copper blocks and waxed copper blocks are no longer grouped.[57]
  • The recipes for mossy stone bricks are now grouped, as are the recipes for mossy cobblestone.
  • Many of the waxed copper block recipes were grouped together.

General

Tags
  • Added the wither to the freeze_immune_entity_types entity type tag.

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Ore veins
  • Snake veins are now slightly rarer and slightly smaller.
  • Ores are clumpier and less evenly distributed.
  • Now have a chance to rarely contain raw metal blocks.

Fixes

20 issues fixed
From released versions before Java Edition 1.17
  • MC-170443 – Banner copying recipe ignores existence of other items in crafting grid.
  • MC-187664 – World border uses float to determine its size, making some border sizes inaccessible, and cannot be set to 30 million or beyond.
  • MC-201269 – Constantly teleporting player to a phantom crashes the game/kicks the player.
From the Java Edition 1.17 development versions
  • MC-203570 – Candles aren't grouped in the recipe book.
  • MC-203745 – Repeated teleport between dimensions causes the entity to duplicate on the client.
  • MC-204031 – Waxed Cut Copper (any level of weathered) have two separate recipes in the recipe book.
  • MC-214187 – Void platform generates multiple times.
  • MC-214735 – Horse disappears when dying while riding it and reloading the world while it's unloaded.
  • MC-214838 – Big dripleaf stem remains after breaking a stem or leaf above it.
  • MC-214865 – Floating islands world type generates extreme terrain.
  • MC-219155 – Fishing line only starts on half distance between the fishing rod and bobber (Apple M1 only).
  • MC-219840 – You cannot unlock the recipe for Mossy Stone Bricks.
  • MC-219842 – Recipes for mossy cobblestone and mossy stone bricks aren't grouped.
  • MC-220033 – (Parity issue) Hanging Roots can't be waterlogged.
  • MC-221560 – Copper/Coal Ore in Deepslate Patches aren't Deepslate Ores.
  • MC-222008 – Empty/missing template pool error grammar mistake.
  • MC-222107 – sounds/mob/goat/pre_ram3.ogg missing from entity.goat.prepare_ram sound event.
  • MC-222520 – Raw and Ore smelting previews aren't grouped together.
  • MC-223055 – Amethyst buds and cluster have an unused blockstate.
  • MC-223792 – Shrinking world border with center past x/z = 29999983 crashes the game.

21w18a

21w18a is the twentieth snapshot for Java Edition 1.17, released on May 5, 2021,[58] which makes changes to goats and experimental ore generation, as well as fixes some bugs.

Changes

Blocks

Infested Blocks
  • Instead of breaking instantly, infested blocks now take half of the time to break compared to their regular counterparts. They still have no assigned tool.[59][60]
Light
  • Changed the textures of the light block displayed in the inventory or when holding a light block.

Mobs

Goats
  • Screaming goats will use their ram attack more often than other goats will.
  • The pitch for the sound of baby goats ramming into stuff has been increased.

General

Tags
  • Added raw gold blocks to the guarded_by_piglins block tag.
  • Added raw gold blocks to the piglin_loved block tag.
Textures
  • Removed the unused mouth textures from the axolotl textures.
  • The goat's two ear textures have been changed to mirror properly.

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Caves
  • Cave carvers generate below y=0 in ocean biomes.
  • Increased the minimum size of noodle caves and carvers, to make them easier to traverse and less likely to break up into fragments.
  • Noodle caves no longer generate above y=30.

Changes in the ore distribution.

Ore distribution
  • Reduced copper spawning a bit, to compensate for large ore veins.
  • Large ore veins are slightly more rare and slightly smaller on average. They now vary significantly, meaning players can still find huge ore veins like the ones in previous versions.
  • Increased chance of finding raw ore blocks in ore veins.
  • Removed deepslate blobs above y=0.
  • Extended the vertical range of the smaller blobs of iron ore, to make it possible to find iron in caves near the surface.
  • Slightly reduced the amount of normal-sized iron blobs, to compensate for large ore veins and the increased range of smaller blobs.

Fixes

46 issues fixed
From released versions before Java Edition 1.17
  • MC-3587 – Last use of an anvil causes player to drop their item.
  • MC-87935 – When closing the inventory while holding an item with the cursor in Creative mode, the item disappears.
  • MC-162953NativeImage bounds checks are incorrect.
  • MC-172362 – Lava item burning sound does not play sometimes.
  • MC-177630 – Infested Stone blocks are mined instantly with Silk Touch.
  • MC-179116 – Burning item sound ignores lava hitbox level.
  • MC-197616 – Certain custom biome settings cause game to spam "Received invalid biome id: -1" in the console, causing major lag or freeze.
  • MC-205797 – Zoglins attack Marker armor stands and Invisible armor stands.
  • MC-206560 – Pufferfish react to Marker armor stands and Invisible armor stands.
  • MC-208430 – Minecraft crashes when loading resource pack due to "tessellating block model".
  • MC-211064 – Loading in a TrueTypeFont with an out-of-bounds size crashes the game.
From the Java Edition 1.17 development versions
  • MC-203566 – Small/Medium amethyst buds don't show up in your hand.
  • MC-204707 – Adventure mode players can extinguish candles.
  • MC-204969 – No "Burning" sound for items burning in lava cauldron.
  • MC-208679 – Axolotl inconsistently doesn't show its mouth in-game.
  • MC-214159 – Small Dripleaf sometimes shrink into smaller (1 block tall) Big Dripleaf when using bone meal.
  • MC-214427 – Spore Blossoms can be used to breathe underwater / cannot be waterlogged.
  • MC-214793 – Some strips of chunks generate completely dark.
  • MC-214808 – World occasionally fails to load correctly.
  • MC-214860 – Some chunks in a line are lit up constantly.
  • MC-214898 – Extreme world generation lag.
  • MC-215867 – Crash: java.lang.IllegalStateException: Chunk not there when requested.
  • MC-215946 – Game fatally crashed while exploring chunks (IllegalStateException: Accessing PalettedContainer from multiple threads).
  • MC-216148 – Some chunks occasionally don't save properly, resetting progress.
  • MC-221611 – Texture missing on parts of Light item levels 2-6.
  • MC-221617 – Light block has an unnecessarily large texture.
  • MC-221647 – Goat Babies Don't Follow Parents.
  • MC-221725 – Legs of goats move differently.
  • MC-221727 – Goat eye height is outside of its hitbox while airborne.
  • MC-221829 – Leads on Goats appear a little too high.
  • MC-221840 – Goats can still do high jumps normally when on honey blocks.
  • MC-221867 – No subtitle for entity.goat.prepare_ram.
  • MC-222151 – Goat head animation is weird when it rides a boat.
  • MC-222157 – Eye position of the goat is too high in some cases, causing suffocation.
  • MC-222458 – UVs on the goat's ears aren't mirrored as they should be.
  • MC-223141 – Piglins aren't attracted to a Block of Raw Gold.
  • MC-223145 – Piglins aren't angered when mining a Block of Raw Gold.
  • MC-223150 – Goats ram Marker armor stands & Invisible armor stands.
  • MC-223166 – Various goat sounds do not have any subtitles.
  • MC-223178 – Deepslate Tile Stairs come before Deepslate Brick Stairs in the creative inventory.
  • MC-223203 – Deepslate ore map colors are inconsistent with deepslate.
  • MC-223239 – Ramming sound that comes from a baby goat does not change pitch.
  • MC-223422 – When removing water from base of Small Dripleaf, the block stands without water untill [sic] a block update.
  • MC-223441 – A redundant torch in the panorama background.
From the previous development version
  • MC-224401 – Mob death does not show death particles.
  • MC-224428 – Raw ore blocks can generate as floating blocks in ore veins.

21w19a

21w19a[61] is the twenty-first snapshot for Java Edition 1.17, released on May 12, 2021, which increases the minimum Java version to 16, removes unfinished features (bundles, candles and sculk sensors) from survival and creative inventory, and fixes bugs.

Additions

General

Tags
  • Added mineable/axe, mineable/hoe, mineable/pickaxe, and mineable/shovel block tags.
    • Blocks with these tags can be destroyed more quickly with the matching tool.
  • Added needs_stone_tool, needs_iron_tool, and needs_diamond_tool block tags.
    • If a block requires the correct tool to drop, these tags determine which tier of that tool is required.

Changes

Blocks

Anvils
  • The maximum length a name of an item can have after being renamed has been increased from 35 characters to 50 characters.
Candle Cakes
  • Renamed from "[Color] Candle Cake" to "Cake with [Color] Candle".

Mobs

Bee
Squid and Glow Squid
  • Now Leads work with them.

Items

Hanging Roots
  • Changed the way the item model is displayed in the player's right hand.
  • Are now twice as big when dropped as an item entity.

Command format

/item
  • New syntax:
    • /item replace <target> with <item stack> [<count>]
      • Same as old version of /item.
    • /item replace <target> from <source> [<modifier>]
      • Copies item for source to target(s), optionally applying modifier.
    • /item modify <target> <modifier>
      • Modifies item (without copying).

Gameplay

Creative inventory
  • Removed sculk sensors, bundles, and candles from the creative inventory.
    • These items can still be accessed through commands.
    • These items are unfinished, and will be re-added in 1.18.
Recipes
  • Removed recipes for bundles and candles.
    • These items are unfinished, and their recipes will be re-added in 1.18.
  • Grouped the recipes for crafting copper ingots from a copper block with other recipes for copper ingots.

General

Splashes
  • Changed the splash "Now Java 8!" to "Now Java 16!"
Tags
  • Added cave vines to the bee_growables block tag.
  • Removed moss blocks from the lush_ground_replaceable block tag.
  • Added azaleas and flowering azaleas to the saplings block and item tags.
Technical
  • Java requirement changed from version 8 to version 16.

Experimental

Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.

Creative inventory
  • Unhid the removed items above.
Recipes

Fixes

39 issues fixed
From released versions before Java Edition 1.17
  • MC-105080 – Ender Dragon is respawned if all Exit End Portal blocks are removed / legacy scanning is done for worlds with new dragon fight.
  • MC-136647 – Leads don't work with Squids.
  • MC-165924 – Snow particles render darker / almost transparent if the block light level is 7 or more.
  • MC-200009 – Crash when using a non-mushroom block in a huge mushroom feature's cap.
From the Java Edition 1.17 development versions
  • MC-203606 – "X Candle Cake" should be "Cake with X Candle".
  • MC-203718 – Lightning rod stays activated when struck by lighting at the same time as being moved by a piston.
  • MC-203757 – Anvil character limit is too low for items with long names.
  • MC-204244 – Sheep are rendered like white sheared sheep through tinted glass blocks.
  • MC-205626 – The command syntax order of /item is inconsistent.
  • MC-208663 – Pufferfish don't defend themselves from axolotls.
  • MC-208740 – Withers attack axolotls that are playing dead.
  • MC-209533 – Amethyst shard is not grouped with other gemstones in the Creative inventory.
  • MC-212206 – Shulkers generating outside the world border bug out when trying to spawn.
  • MC-213774 – Hanging roots float in your hand.
  • MC-213922 – Shulkers are not spawned in the correct place.
  • MC-213943 – Flying slightly above a big dripleaf can cause it to tilt without touching it.
  • MC-214127 – Despite being a type of berry plant, bees don't pollinate cave vines.
  • MC-214283 – Hanging roots break sound event uses break3 twice, excluding break4.
  • MC-217626 – Spore blossom is positioned rather strangely among flowers in Creative.
  • MC-219445 – Bonemealing big dripleaf in flowing water doesn't update the water.
  • MC-219873 – Lightning Bolt detecting lightning rod incorrectly.
  • MC-220106 – Lightning hitting an entity on copper slabs on top another copper block fully cleans the bottom block first.
  • MC-220215 – Opening a shulker box while an entity is standing on top of it pushes it too high for a short amount of time.
  • MC-221756 – Snow particles do not render at all when the block light level is 7 or more.
  • MC-221844 – Powder snow doesn't produce particles when broken by burning mobs.
  • MC-221957 – Pick Block used on a level 15 light block returns a different item from the default light block.
  • MC-222738 – Leads don't work with Glow Squids.
  • MC-222882 – Spyglass in Search tab of creative inventory is mixed with block types instead of tools where it belongs.
  • MC-223132 – Powder snow doesn't produce a breaking sound or subtitle, when destroyed through extinguishing a burning player, mob, or flame arrow.
  • MC-223171 – Budding Amethyst and Copper variants are far away in the creative inventory.
  • MC-223446 – Shulkers appear in the wrong place when riding an entity.
  • MC-223820 – Azalea & Flowering Azalea aren't part of the block or item tags for #saplings.
  • MC-223907 – Moss block appears in the #lush_ground_replaceable.json twice.
  • MC-224325minecraft.used:minecraft.COMPOSTABLE_ITEM doesn't increase when placing an item into a composter.
  • MC-224388 – Ores and raw materials in smelting preview are off center.
  • MC-224389 – Copper Ingots are no longer grouped in the crafting table.
From the previous development version
  • MC-224927 – Infested blocks take twice as long instead of half the time.
  • MC-224972 – Infested blocks have no effective tool.
  • MC-225025 – Server side performance drop with dragon's breath area effect clouds.

21w20a

21w20a[62] is the twenty-second and final snapshot for Java Edition 1.17, released on May 19, 2021, which makes tweaks and fixes bugs, most of which relate to axolotl behavior and world generation issues.

Additions

General

NBT
  • Added HasVisualFire NBT tag.
    • Entities with this tag visually appear on fire, even if they are not actually on fire.
Tags

Changes

Blocks

Glow Lichen
  • Now drops the correct amount of glow lichen if there's multiple in one block space.
Rooted Dirt
Structure block
  • All invisible blocks are now displayed as small cubes by save mode structure blocks; previously barriers and light blocks would not display at all.[64][65]
    • Variants of air still all appear identical and are not distinguished.[66]
Air, Cave Air and Void Air Structure Void Barrier Light
Before Air (shown) JE2.png Structure Void (shown) JE2.png Blank.png Blank.png
After Air (shown) JE2.png Structure Void (shown) JE3.png Barrier (shown) JE1.png Light (shown) JE1.png

Items

Big Dripleaf
  • Tweaked the big dripleaf's inventory model.
Light Block
  • Changed the textures of the light block's inventory icons to prevent overlap with the stack number.

Mobs

Axolotl
  • Axolotls will now only play dead when in water.
  • Can no longer be fed tropical fish, only buckets of tropical fish, as axolotls in real life eat live fish. This also brings it to parity with Bedrock Edition.[67]
  • When fed with a bucket of tropical fish, it will return a water bucket instead of a bucket.
Llama
  • Llamas no longer spit at players in peaceful mode.

World generation

Amethyst Geodes
  • Geodes were made rarer.

General

Distance effects
  • Fixed a precision loss issue with minecraft:location_check.[68]
Narrator
  • GUI narration now includes position and usage of hovered or focused element.
Tags
  • Added the cave_vines_plant block to the bee_growables block tag.
    • The cave_vines block was already in this tag.
  • Removed the tropical fish item from the axolotl_tempt_items item tag.
Text
  • Changed the strings "Chat disabled by launcher option, cannot send message" and "Chat not allowed by account settings, cannot send message" to "Chat disabled by launcher option. Cannot send message" and "Chat not allowed by account settings. Cannot send message", respectively.
Protocol
  • While connecting to a server, the client will send a handshake packet with "hostname" and "port" field directly padded with address given in address text field directly, instead of converting them to the real hostname and port.

Fixes

74 issues fixed
From released versions before Java Edition 1.17
  • MC-610 – Grass / Flowers / Snow are placed incorrectly in newly created chunks.
  • MC-102220 – Barrier Blocks are not shown when "Show Invisible Blocks" is selected in Save Structure Blocks.
  • MC-125858 – Grass / flowers / snow / trees are placed incorrectly in Superflat World.
  • MC-137452 – Bamboo grows in lots of inappropriate places in Bamboo Jungles.
  • MC-149777 – Crash when loading world: java.util.ConcurrentModificationException when using Java 11 or above.
  • MC-166187 – Some mobs still try to hit players in Peaceful.
  • MC-172304 – Piglins, piglin brutes, hoglins, zoglins and axolotls can attack their own teammates.
  • MC-189535 – Catching a fish in a bucket on creative mode doesn't give player new bucket.
  • MC-191338 – Name color for Minecart with Command Block is incorrect.
  • MC-192591 – Name color for Structure Void is incorrect.
  • MC-198200 – Crash when leaving out processors in a template pool: java.lang.IllegalArgumentException: bound must be positive.
  • MC-220694 – Name color for knowledge book is incorrect.
  • MC-223322 – Chorus flowers can be broken with projectiles in spawn protection.
From the Java Edition 1.17 development versions
  • MC-203712 – Amethyst Geodes cause floating water/lava to generate when intersecting water/lava caves/pools.
  • MC-203867 – Amethyst geodes can overwrite bedrock.
  • MC-204393 – Lava Cauldron emits redstone signal strength 1 instead of 3.
  • MC-204902 – Dirt paths are no longer compatible with the programmer art resource pack.
  • MC-205104 – Rideable mobs are not affected by powder snow's freezing effect while being ridden.
  • MC-205120 – Freezing hearts aren't displayed properly in Programmer Art resource pack.
  • MC-205250 – Amethyst geodes can generate in a stronghold and can potentially destroy the end portal frames.
  • MC-205680minecraft:location_check predicate floating point imprecision.
  • MC-206107 – Parrots sitting on shoulders do not freeze in powder snow.
  • MC-206131 – Amethyst blocks are transparent / don't conduct Redstone.
  • MC-206601 – Potion particles are showing when looking through spyglass.
  • MC-206839 – Pointed dripstones cause extreme durability damage to helmets.
  • MC-207324 – Mobs and particles sometimes don't fully render behind stained or tinted glass.
  • MC-207366 – Trying to modify the world height of a world after it's already been generated gives a null pointer exception.
  • MC-208586 – Axolotls get stuck and spin constantly on top of lily pads.
  • MC-208589 – Axolotls have a swimming animation (move their body up- and downwards) when on land.
  • MC-208617 – Axolotls sometimes twitch rapidly when adjusting their rotation.
  • MC-208624 – An axolotl is not correctly centered whilst inside of a boat.
  • MC-208641 – Axolotl movement glitch on stairs.
  • MC-208649 – Breeding axolotl with a bucket of tropical gives back a bucket instead of a water bucket.
  • MC-208654 – Collecting an axolotl with a water bucket in creative mode replaces the original bucket.
  • MC-208675 – Axolotls sometimes use walking animation when in shallow water.
  • MC-208682 – Axolotls frequently get stuck inside of waterlogged blocks.
  • MC-208691 – Axolotls play dead even when they take damage without being attacked by an entity.
  • MC-208735 – Axolotls attempt to pathfind towards unreachable water, then start spinning, eventually drying out and dying.
  • MC-209324 – Pointed Dripstone can be broken with tridents in spawn protection.
  • MC-212125 – Only one glow lichen drops when using shears on multiple in a single block space.
  • MC-212531 – Shulkers can rotate their heads up and down.
  • MC-212931 – Fire extinguishing sound doesn't play when mobs are extinguished with rain/water.
  • MC-214041 – Mob can't properly or difficult walk on big dripleaf, when the big dripleaf is 4 blocks or more from the ground.
  • MC-214909 – Top half of a small dripleaf can turn into a ghost block when placing it in water while the water is being removed.
  • MC-215665 – Amethyst Geodes can overlap with dungeons.
  • MC-216214netherrack_replace_blobs with water as target crashes the game.
  • MC-216980 – Comma splices in two source strings (EN_US).
  • MC-217113 – Foxes spawned inside of powder snow sleeps.
  • MC-217608 – The big dripleaf texture is not vertically centered.
  • MC-217610 – Too much of the big dripleaf is hidden when placed inside of an item frame.
  • MC-217742 – Campfires and TNT can be lit by players using arrows shot from flame bows in spawn protection.
  • MC-219856 – F3 + L isn't sorted alphabetically in the debug screen.
  • MC-219870 – The Mojang loading screen upon start up flashes black.
  • MC-220063 – Sweet berries and glow berries sound events are named extremely differently.
  • MC-220128 – Parity Issue: Rooted dirt won't turn into the dirt and drop roots item after tilling with hoe in Java.
  • MC-220867 – Fossils can generate through bedrock.
  • MC-221566 – Name color for light is incorrect.
  • MC-221833 – Light blocks are not shown within structure block bounds with Show Invisible Blocks on.
  • MC-221863 – Powder Snow can be broken by players on fire in spawn protection.
  • MC-221984 – Collecting an axolotl in a bucket and then placing it resets its kill cooldown.
  • MC-222002 – Light item displays the wrong level number.
  • MC-222116 – Splash water bottles doesn't extinguish candle cakes.
  • MC-222797 – Axolotl can be bred with just tropical fish items, not just bucket ones.
  • MC-223371 – Powder snow can be destroyed through the use of a flame bow in spawn protection.
  • MC-223372 – You can decrease the level of a water or powder snow cauldron, through the use of an entity on fire in spawn protection.
  • MC-224320minecraft.used:minecraft.potion doesn't increase when filling a partially filled cauldron with a water bottle.
  • MC-224322 – Powder snow can create ghost blocks in creative mode.
  • MC-224480 – Powder snow doesn't melt into water in cauldrons.
  • MC-224482 – Superflat presets no longer generate with decorations.
  • MC-225078 – Upgrading from 1.12.2 and below will cause items to lose enchantments.
  • MC-225253 – Dying in a nether portal softlocks the player on the "You Died!" menu.
From the previous development version
  • MC-225347cave_vines_plant isn't in #bee_growables.
  • MC-225352 – Geodes have not been made "significantly rarer".
  • MC-225360 – Cannot resolve SRV records: unknown host.

1.17 Pre-release 1

1.17 Pre-release 1 (known as 1.17-pre1 in the launcher) is the first pre-release for Java Edition 1.17, released on May 27, 2021,[69] which re-added candles to survival mode, changed credits and the glowing on signs, added new advancements and splashes, and fixed bugs.

Additions

Blocks

Candles
  • Re-added candles to the creative inventory.
  • Candles can be crafted again.
Potted Azalea and Potted Flowering Azalea

Command format

/perf
  • Starts a recording for 10 seconds capturing metrics such as tick durations, used heap sizes and other more detailed stats.
  • Executing again before the 10-second limit ends the recording early.

Gameplay

Advancements
  • Added eleven new advancements:
    • Whatever Floats Your Goat!
    • Wax On
    • Wax Off
      • Scrape wax off a copper block.
    • The Cutest Predator
    • The Healing Power of Friendship!
      • Team up with an axolotl and win a fight.
    • Glow and Behold!
    • Light as a Rabbit
    • Surge Protector
    • Is It a Bird?
    • Is It a Balloon?
      • Look at a ghast through a spyglass.
    • Is It a Plane?
  • Adds new advancement triggers.
    • started_riding
      • Triggered when player starts riding a vehicle or entity starts riding vehicle currently ridden by player.
    • lightning_strike
      • Triggers for any player on the server when lightning finishes (i.e. entity disappears).
    • using_item
      • Triggered for every tick of using items (like crossbows, spyglass, fishing rods, etc).

General

Predicate
  • Added lightning_bolt sub-predicate.
Splashes
  • Added the following splash text:
    • "[this splash text has been delayed until part 2]"
    • "Contains simulated goats!"
    • "Home-made!"
    • "There's <<a cat on ,my keyboard!~" [sic]
    • "The cutest predator you'll ever meet!"
    • "Now you are thinking with pistons!"
    • "Get to the coppah!"
    • "Board game version also available!"
    • "Honey, I waxed the copper!"
    • "Plant-based light sources!"
    • "Made by "real" people!"
Tags

Changes

Blocks

Candles
  • Candles now have a different texture when lit.
Signs
  • Glowing text on signs now has an outer glow, making text in dark colors more visible in the dark.

Items

Big dripleaf and small dripleaf
  • Changed the held item models in the player's right hand.

Command format

/debug
  • Removes debug report command.
  • Replaced by F3+L and /perf.

Gameplay

Advancements
  • Added source condition to effects_changed trigger.
Crafting

General

Credits
  • Updated the credits, which were brought over from Bedrock Edition; as a result, the credits are significantly longer, as they include people and corporations that did not work on Java Edition.[71]
  • Changed the format from .txt to .json.
  • Now scroll faster when holding Space.
Predicate
  • Added passenger, stepping_on and lightning_bolt properties to entity_properties predicate
  • Added looking_at (entity currently viewed by player) condition to player sub-predicate.
  • Expanded item field on item predicate to items.
  • Now accepts an array of item types.
  • Expanded block field on block predicate to blocks.
    • Now accepts an array of block types.
Splashes
  • Removed "Woo, /v/!"
Tags
  • Added flowering azalea and flowering azalea leaves to the flowers block and item tags.
  • Removed flowering azalea and flowering azalea leaves from the small_flowers block and item tags.
    • This prevents endermen from picking up these blocks, as well as crafting suspicious stew with them.
  • Removed moss carpet from the mineable/axe block tag.
  • Added potted azalea bushes and potted flowering azaleas bushes to the flower_pots block tag.
  • Added non-waxed oxidized copper variants to the needs_stone_tool block tag.

Fixes

63 issues fixed
From released versions before Java Edition 1.17
  • MC-19690 – Reducing maxHealth / max_health can cause fake death.
  • MC-65587 – Lag spike while loading player head textures/player skins.
  • MC-104897 – End crystals placed on exit portals generated before 1.9 do not respawn the ender dragon.
  • MC-117708 – Credits background jitters.
  • MC-118757 – Increasing Game State Rain Level values make the game increasingly laggier and distorts UI.
  • MC-130523 – Void World spawns you at y=0 even if you entered 64 air blocks in customization.
  • MC-148809 – Structure block data length limited to 12.
  • MC-163945 – Intersecting structures can create corrupted block entities (spawner / chest).
  • MC-189336⇧ Shifting around servers in the server list crashes the game (ArrayIndexOutOfBoundsException).
  • MC-190952 – Apostrophe in "Developers of Mo' Creatures" heading is inconsistent with other apostrophes in credits.
  • MC-192889 – When placing certain heads or putting them in entities' head slot the game stutters.
  • MC-197942 – Leaves change to stone near Lava Pool (Recurrence of MC-48340).
  • MC-198957 – End Portal Frames change to Stone near Lava Pool.
  • MC-202249 – Angering passive mobs in new nether chunks very far away from previously generated chunks, then entering a nether portal causes server to completely freeze.
  • MC-203131 – Setting the weight in Template Pool to high values will lag world and can cause out of memory error.
  • MC-209819 – Server crash when pathfinding to player that is teleporting away.
  • MC-213062 – A ruined portal generated in an end portal.
  • MC-218112SynchedEntityData is using locks incorrectly.
  • MC-218972 – The glowing effect outline omits parts of entities if the entity is invisible.
  • MC-224778 – Game crashes when there is a block with no facing block state in #wall_corals and a warm ocean tries to generate.
From the Java Edition 1.17 development versions
  • MC-203558 – Lighting a candle is sometimes delayed.
  • MC-203661 – Flowing liquids look very dark through tinted glass.
  • MC-203704 – Candles don't show flame animations when particles are set to "Minimal".
  • MC-204649 – Amethyst blocks don't make chime sounds when walked on by certain mobs.
  • MC-205035 – Powder Snow Bucket is not grouped with Snowball or buckets in creative inventory.
  • MC-208604 – While the mainhand is empty and there's a loaded crossbow in the offhand, the mainhand will appear invisible.
  • MC-211601 – Entities are loaded after scheduled ticks are processed causing detector rails, pressure plates, etc. to turn off.
  • MC-212142 – Applying glow ink on signs doesn't render the text bright without also having applied a custom color.
  • MC-212146 – Glow lichen can generate floating inside underground structures.
  • MC-212207 – Geodes generating inside icebergs.
  • MC-213799 – Dripleaf isn't properly held in the player's hand.
  • MC-214057 – Entities no longer showing flame animation when in water/lava at the same time.
  • MC-214636 – Small dripleaf leafs can overlap each other and cause z-fighting.
  • MC-214684 – Azaleas cannot be placed in flower pots.
  • MC-216276 – Lava pools break bedrock with custom world generation.
  • MC-218831 – Lots of missing shaders in the game assets.
  • MC-219762 – More performant noise blending algorithm in BlendedNoise.
  • MC-221554 – When searching, the goat spawn egg appears in the middle of the different boat types.
  • MC-221820 – Inconsistency: Enderman is able to pick up flowering azalea, while unable to hold normal azalea bush.
  • MC-223021glShaderSource fails on some AMD drivers resulting in a crash on 1.17.
  • MC-223843 – Mycelium inside enderman_holdable.json twice.
  • MC-224159 – Absorbtion hearts don't have the wither heart effect.
  • MC-224349 – Attempting to save multiple debug profiles during the same second fails to properly save all but the first profile.
  • MC-224445 – Reloading resource packs with fabulous graphics causes screen to become black, after a few times causes crash for AMD drivers.
  • MC-224861 – Falling blocks disappear for a moment when landing.
  • MC-224862 – Azalea and Flowering Azaleas can take bone meal despite being on clay.
  • MC-225010 – Closing the inventory in creative mode while having an item on the cursor turns it into a ghost item.
  • MC-225129 – Players do not despawn until they respawn.
  • MC-225193 – Goats will attempt to ram entities that are outside of the world border.
  • MC-225315 – Selected text on signs blinks.
  • MC-225404 – The axe is still an appropriate tool for moss carpets.
  • MC-225722java.lang.IllegalArgumentException: bound must be positive.
  • MC-225773 – Axolotls can make ambient noises when they're playing dead.
  • MC-226192 – Crash upon attempting to create a new scoreboard objective: java.lang.NullPointerException: Cannot invoke "String.toLowerCase(java.util.Locale)" because "☃" is null.
From the previous development version
  • MC-225843 – Snow layers can still generate floating over lakes.
  • MC-225850 – Grass, tall grass, flower, double flower, fern, large fern and tree can generate on sand or gravel.
  • MC-225853 – Minecraft sometimes crashes when trying to start 21w20a for the first time.
  • MC-225895 – Floating grass can still generate above lava lakes.
  • MC-225916 – Non-waxed oxidized copper blocks don't require at least stone tier to be mined.
  • MC-225919 – Coal Ore from fossils can generate through bedrock.
  • MC-225929 – Item statistic sorting not functioning.
  • MC-225978 – Non-waxed weathered copper blocks appear twice in needs_stone_tool.json.
Private issues

1.17 Pre-release 2

1.17 Pre-release 2 (known as 1.17-pre2 in the launcher) is the second pre-release for Java Edition 1.17, released on May 31, 2021,[72] which fixed bugs and crashes, including fixes to smooth lighting.

Changes

Block

Flowering Azalea Leaves
  • The namespaced ID was changed from minecraft:azalea_leaves_flowers to minecraft:flowering_azalea_leaves.

Fixes

16 issues fixed
From released versions before Java Edition 1.17
  • MC-68129 – Smooth lighting doesn't work properly underwater.
  • MC-106417 – Shulkers can be pushed outside of the world border by a piston.
  • MC-173834 – Glowing damaged iron golem outline shows cracks.
  • MC-196298 – Arrows fired into the side of bamboo or pointed dripstone never despawn.
  • MC-220698 – The ExplosionPower of ghast fireballs is uncapped, causing a freeze / crash.
  • MC-223602 – Glowing translucent entities often don't merge their outlines with other glowing entities.
From the Java Edition 1.17 development versions
  • MC-205840 – Smooth lighting behaves oddly on blocks covered with tinted glass.
  • MC-213767 – Flowering azalea leaves ID is unintuitive.
  • MC-220109 – Horses' fur patterns are outlined by the glowing effect.
  • MC-225190 – TNT can be pushed with enchanted sword with knockback.
  • MC-225911 – Slimes and magma cubes not interacting with player.
From the previous development version
  • MC-226470 – Nether fossils generate on the nether roof above bedrock in soul sand valleys.
  • MC-226561 – Facing away from signs with glowing text makes the text disappear or z-fight.
  • MC-226576 – Unknown CPU on Debug menu.
  • MC-226782/debug start does not work as described.
Private issues
  • MC-224580 – Duplication exploit with dolphins.

1.17 Pre-release 3

1.17 Pre-release 3 (known as 1.17-pre3 in the launcher) is the third pre-release for Java Edition 1.17, released on June 1, 2021,[73] which fixed bugs and crashes, as well as tweaking the lit candle textures.

Changes

Blocks

Candles
  • Tweaked the textures of lit candles.
Glow Lichen
  • Now does not emit light when on no size.

Mobs

Goats
  • Mobs rammed by goats will no longer retaliate.
Axolotls and Glow squids
  • Now only spawn in total darkness and where there's a block with base_stone_overworld tag (i.e. stone, deepslate, andesite, diorite, granite or tuff) less than 5 blocks below the spawning space.

Gameplay

Advancements
  • Changed the description of the advancement "Wax On" from "Apply Wax to a Copper block!" to "Apply Honeycomb to a Copper block!".

Fixes

16 issues fixed
From released versions before Java Edition 1.17
  • MC-85967 – Vines placed without a support block using /setblock cannot be interacted with.
  • MC-223227 – Floating water caves in caves under the ocean.
  • MC-225077 – Vines can spread upward to non-full blocks.
From the Java Edition 1.17 development versions
  • MC-203773 – Lightning rod is floating when held in third-person.
  • MC-215946 – Game fatally crashed while exploring chunks (IllegalStateException: Accessing PalettedContainer from multiple threads).
  • MC-222223 – Baby axolotls despawn.
  • MC-223146 – Endermen don't render vines when held anymore.
  • MC-223147 – Vines aren't rendered with /setblock.
  • MC-225344 – Cave generation seems to be broken at seemingly random chunk borders.
  • MC-226441 – Lit candle texture doesn't change when on cake.
  • MC-226514 – Crash trying to start a world: Error: java.lang.NullPointerException: Cannot read field "u" because "☃" is null.
  • MC-226660 – "Double closing program" warnings upon closing the game.
  • MC-226874 – Player's owned player_head on mobs are flashing.
From the previous development version
  • MC-226956 – Gravity blocks do not break when doEntityDrops is set to false.
  • MC-226970 – Stars are occluded by render fog.
  • MC-227018 – Changing or reloading resource packs does not reload core shaders until reloading a second time.

1.17 Pre-release 4

1.17 Pre-release 4 (known as 1.17-pre4 in the launcher) is the fourth pre-release for Java Edition 1.17, released on June 2, 2021,[74] which fixed bugs and crashes, most of which relate to issues in the credits.

Changes

Items

Candle Cake
  • The undyed candle in cake has been renamed from "Candle Cake" to "Cake with Candle".

General

Credits
  • Now scroll even faster when holding Space and one or both of the Ctrl keys together.

Fixes

14 issues fixed
From released versions before Java Edition 1.17
  • MC-223552 – Credits not alphabetically ordered.
From the Java Edition 1.17 development versions
  • MC-226690 – In the credits, "EXPERIS" is in all capital letters for two employees.
  • MC-226692 – In the credits, a closing parenthesis is missing for Brian Canning.
  • MC-226693 – The credits say "Wed Developers" instead of "Web Developers" in one place.
  • MC-226696 – In the credits, "TEN GUN DESIGN INC" is in all capital letters for one employee.
  • MC-226698 – In the credits, "HARVEY NASH INC" is in all capital letters for one employee.
  • MC-226700 – Some people are listed twice in the credits.
  • MC-226702 – The usage and punctuation of "Inc." and "LLC" are inconsistent in the credits.
  • MC-226762 – Credits Text Wrapping.
  • MC-226777 – When a crossbow is loaded in the offhand, you cannot see it or shoot with it if an item is held in the main hand.
  • MC-227003 – Game crashed whilst debug profiling.
From the previous development version
  • MC-227058 – Any hostility between animals is removed in peaceful.
  • MC-227092 – Experimental Settings confirmation prompt appears when creating any world in 1.17-pre3.
  • MC-227107 – C418 is removed from ==Composers== in credits.json.

1.17 Pre-release 5

1.17 Pre-release 5 (known as 1.17-pre5 in the launcher) is the fifth and final pre-release for Java Edition 1.17, released on June 3, 2021,[75] which fixed bugs.

Fixes

5 issues fixed
From the Java Edition 1.17 development versions
  • MC-225707 – Caves and Cliffs Datapacks Server Error.
  • MC-227065 – Cannot Invoke "na.b(String, int)" because "☃ is null.
From the previous development version
  • MC-227207 – Datafixer doesn't properly update certain scoreboard objectives from 1.16 to 1.17.
  • MC-227208 – Breaking bamboo is excessively laggy since the 1.17 pre-releases.
  • MC-227232 – Player head SkullOwner tag with username string no longer works.

1.17 Release Candidate 1

1.17 Release Candidate 1 (known as 1.17-rc1 in the launcher) is the first release candidate for Java Edition 1.17, released on June 4, 2021,[76] which fixes bugs and crashes.

Fixes

3 issues fixed
From the previous development version
  • MC-227323 – Custom player heads sometimes flash when placed on armor stands.
Other

1.17 Release Candidate 2

1.17 Release Candidate 2 (known as 1.17-rc2 in the launcher) is the second and final release candidate for Java Edition 1.17, released on June 7, 2021,[77] which fixes bugs and crashes.

Changes

  • Authlib was updated from 2.2.30 to 2.3.31.
  • Legacy skin handling now has improved skin validation.
  • The spawn egg dispenser behavior now catches any exceptions that could be thrown when spawning the entity.

Fixes

2 issues fixed
Other
  • 2 private issues were fixed.[78]

Notes and references

  1. "Minecraft Snapshot 20w45a" – Minecraft.net, November 4, 2020
  2. MC-203550
  3. MC-174685
  4. "Minecraft Snapshot 20w46a" – Minecraft.net, November 11, 2020
  5. MC-205041
  6. MC-197276
  7. MC-204861
  8. "Minecraft Snapshot 20w48a" – Minecraft.net, November 25, 2020
  9. "Minecraft Snapshot 20w49a" – Minecraft.net, December 2, 2020
  10. "Minecraft Snapshot 20w51a" – Minecraft.net, December 16, 2020
  11. "Minecraft Snapshot 21w03a" – Minecraft.net, January 20, 2021
  12. https://youtu.be/9WpkDr1gXq8
  13. https://youtu.be/tH76tx-AnWI
  14. "Minecraft Snapshot 21w05a" – Minecraft.net, February 3, 2021
  15. MC-212347
  16. "Minecraft Snapshot 21w05b" – Minecraft.net, February 4, 2021
  17. "Minecraft Snapshot 21w06a" – Minecraft.net, February 10, 2021
  18. "We added noise caves, changed world height, and added aquifers (local water levels). Summarized in this pic. Note that the underground biomes don't generate quite yet. Try it, give us feedback!"@henrikkniberg on Twitter
  19. "Minecraft Snapshot 21w07a" – Minecraft.net, February 17, 2021
  20. "Minecraft Snapshot 21w08a" – Minecraft.net, February 24, 2021
  21. "We've also introduced crack carvers, which are like ravines but very narrow and very deep."@henrikkniberg on Twitter
  22. "Snapshot time! Mostly cave tweaks. We've increased the cave sizes again, tweaked ore distribution, and renamed Grimstone (among other things). Unfortunately we accidentally messed up iron ore spawning, it is basically missing. Will fix ASAP."@henrikkniberg on Twitter, February 24, 2021
  23. "Oh forgot to mention in the changelog: we also added some more variation to the old cave carvers (width, heigh, floor cutoff, etc). Just to make them blend in a bit better with the noise caves instead of being instantly recognizable."@henrikkniberg on Twitter, February 24, 2021
  24. https://youtu.be/f6o1Bz0cwdI?t=225
  25. "Minecraft Snapshot 21w08b" – Minecraft.net, February 25, 2021
  26. "Minecraft Snapshot 21w10a" – Minecraft.net, March 10, 2021
  27. "Minecraft Snapshot 21w11a" – Minecraft.net, March 17, 2021
  28. MC-150784
  29. MC-1483
  30. MC-214568
  31. MC-219960
  32. MC-197561
  33. MC-160195
  34. MC-150054
  35. MC-216227
  36. MC-145501
  37. a b MC-219850
  38. "Minecraft Snapshot 21w13a" – Minecraft.net, March 31, 2021
  39. MC-221630
  40. MC-221636 – Works As Intended
  41. MC-205131
  42. MC-221553
  43. MC-222051
  44. MC-219850
  45. "Minecraft Snapshot 21w13a" (archived) by Adrian Östergård – minecraft.net, Mar 31, 2021.
  46. "Minecraft Snapshot 21w14a" – Minecraft.net, April 7, 2021
  47. "Minecraft Snapshot 21w15a" – Minecraft.net, April 14, 2021
  48. Caves and Cliffs Announcement
  49. "A Caves & Cliffs announcement" – Minecraft.net, April 14, 2021
  50. "Minecraft: Caves & Cliffs Update FAQ" – Minecraft Help Center, April 17, 2021. "the first (1.17) this summer, and the second (1.18) around the holiday season"
  51. MC-223141
  52. MC-223145
  53. MC-223185 – resolved as "Invalid"
  54. "Minecraft Snapshot 21w16a" – Minecraft.net, April 21, 2021
  55. "Minecraft Snapshot 21w17a" – Minecraft.net, April 28, 2021
  56. MC-220033 – "(Parity issue) Hanging Roots can't be waterlogged" – resolved as "Fixed"
  57. MC-224389 – resolved as "Fixed"
  58. "Minecraft Snapshot 21w18a" – Minecraft.net, May 5, 2021
  59. MC-224927 – resolved as "Fixed"
  60. MC-224972 – resolved as "Fixed"
  61. "Minecraft Snapshot 21w19a" – Minecraft.net, May 12, 2021
  62. "Minecraft Snapshot 21w20a" – Minecraft.net, May 19, 2021
  63. MC-220128
  64. MC-102220
  65. MC-221833
  66. MC-221834
  67. MCPE-123573 – resolved as "Works As Intended"
  68. MC-205680
  69. "Minecraft 1.17 Pre-Release 1" – Minecraft.net, May 27, 2021
  70. MC-226521 – resolved as "Works As Intended"
  71. MC-226535 – "Java Edition is using credits from Bedrock now" – resolved as "Works As Intended"
  72. "Minecraft 1.17 Pre-Release 2" – Minecraft.net, May 31, 2021
  73. "Minecraft 1.17 Pre-Release 3" – Minecraft.net, June 1, 2021
  74. "Minecraft 1.17 Pre-Release 4" – Minecraft.net, June 2, 2021
  75. "Minecraft 1.17 Pre-Release 5" – Minecraft.net, June 3, 2021
  76. "Minecraft 1.17 Release Candidate 1" – Minecraft.net, June 4, 2021
  77. "Minecraft 1.17 Release Candidate 2" – Minecraft.net, June 7, 2021
  78. https://www.reddit.com/r/Minecraft/comments/nub794/a_new_challenger_arrives_minecraft_117_release/h0wlnsc?utm_source=share&utm_medium=web2x&context=3