Java Edition 13w36a

13w36a is the first snapshot released for 1.7.2.

Additions

 * New Biomes
 * Mesa (also known as Clay Canyon or "Disco Mountains")
 * Composed of multiple colored hardened clay
 * Dead bushes spawn in this biome
 * Mega Taiga
 * Contains 2x2 Spruce trees
 * Has a grass block variant known as Podzol.
 * Currently obtained only by the silk touch enchantment.
 * Contains dirt blocks that do not allow grass to grow.
 * Moss Stone "boulders" are scattered around in this biome.
 * Dead Bushes, Mushrooms, and Ferns spawn in this biome.
 * Cold Beach (Technical Biome)
 * Ice Plains Spikes
 * Contains giant ice spires similar to upside down icicles made of Packed Ice
 * Stone Beach (Technical Biome)
 * Main block is stone
 * Like Steep hills, not completely vertical
 * Savannah
 * Curved Acacia-like Trees
 * Along with plains, the Savannah is one of the two biomes where horses now spawn naturally
 * NPC Villages may generate in savannah biomes
 * Roofed/Black Forest
 * Has dark grass and giant mushrooms with 2 by 2 spruce trees
 * Has extremely dense trees and leaves; dark and dangerous under the canopy even during the day
 * Monsters will most likely be able to spawn during the day and the night
 * This is the first biome aside from the Mushroom Island that naturally spawns with giant mushrooms
 * Birch Forest
 * A forest made of birch trees.
 * Sunflower Plains
 * Exactly the same as Plains, but can spawn Sunflowers
 * Flower Forest
 * Forest variant with several of the new flowers, including peonies, orange tulips, white tulips, oxeye daisies, rose bush and allium
 * Deep Ocean
 * Is about ten blocks deeper than normal oceans, the maximum depth is low 20s, but may reach bedrock.
 * Extreme Hills+
 * Contains spruce trees
 * Taiga
 * Non-snowy taiga variation. The previous taiga biomes are now cold taiga biomes
 * Biome Variants/Technical Biomes
 * M - Biomes with an M variant are much rarer than any other variant.
 * Extreme Hills M, Taiga M, Roofed Forest M, Extreme Hills+ M, Savanna M Mesa Plateau M and Mesa Plateau F M are more mountainous versions of their normal biome counterpart.
 * Desert M has patches of water unlike normal deserts
 * Birch Forest M has taller birch trees than usual
 * Swampland M, Jungle M, JungleEdge M, Birch Forest Hills M, Cold Taiga M and Savanna Plateau M are other rare technical biome variants
 * Plateau - Biomes with a Plateau variant are like the hills technical biome, but flattened at the top
 * Savanna Plateau and Mesa Plateau are both plateaus
 * Hills - More technical hills biomes are added to fit with the new biomes.
 * Birch Forest Hills, Cold Taiga Hills and Mega Taiga Hills can now be generated
 * New AMPLIFIED world type.
 * Requires powerful computer to run.
 * Mountains in this world type can reach up to Y: 256.
 * Gravel beaches
 * Most biomes have uncommon/rare variations
 * Alternate taiga variation without snow
 * Extreme Hills+ variation that has spruce trees
 * New technical biomes coded as Savanna M, Desert M, Roofed Forest M or Extreme Hills+ M, the "M" stands for mountain
 * Snow now generates depending on Y level, with noise variation
 * Biome dependent
 * New enchantments for Fishing Rods that can change your luck when fishing.
 * Lure - increases chance of catching fish
 * Luck of the Sea - increases chance of getting treasure
 * New fish
 * Pufferfish
 * Will poison you, give you nausea, and give you hunger if eaten
 * Used to brew a water breathing potion
 * Raw Salmon
 * Can be cooked and eaten
 * Clownfish
 * New particle effects
 * Fishing now has many different particle effects
 * Bubbles will show up moving towards your bobber just before you have something on your hook. This has the appearance of a fish swimming towards the hook.
 * Falling now has particle effects
 * Particle size depends on distance fallen.
 * Multiple enchantments in an Enchanted Book, when combined with a tool using an Anvil, give enchantments according to the tool.
 * Zombies and Skeletons can now spawn with and drop armor, bows and swords enchanted with the Unbreaking Enchantment.


 * New ground covers
 * Podzol
 * New grass variation
 * Grass can't spread on it, doesn't spread on to dirt
 * Can be harvested using Silk Touch tools
 * Only found in Redwood Forest Biomes
 * Grassless dirt
 * Grass can not grow on it
 * Block ID is 3:1
 * Only obtainable through
 * Packed ice
 * When broken, does not turn to water like normal ice blocks do
 * Does not melt
 * Opaque, rather than translucent like normal ice
 * Torches and redstone can be placed on it
 * New Flowers
 * Red, Orange, White and Pink Tulips
 * Can be crafted to Red, Orange, Light Gray, and Pink Dyes, respectively
 * Blue Orchid
 * Can be crafted to Light Blue Dye
 * Allium
 * Can be crafted to Magenta Dye
 * Azure Bluet
 * Can be crafted to Light Gray Dye
 * Oxeye Daisy
 * Can be crafted to Light Gray Dye
 * Poppy replaced Rose
 * Iron Golems now drop poppies instead of roses
 * Two blocks tall Flowers
 * Applying bonemeal to them causes them to dispense a flower item that can be collected. Therefore, all two blocks tall flowers are renewable.
 * Sunflowers
 * Typically face East
 * Can be grown, unlike Roses and Dandelions
 * Can be crafted into 2 Yellow Dye
 * Pink Peonies, called Peony
 * Can be crafted into 2 Pink Dye
 * Rose bush
 * Can be crafted into 2 Red Dye
 * Lilac
 * Can be crafted into 2 Magenta Dye
 * Two block tall grass
 * Double Tallgrass
 * Can be made by applying Bonemeal to Tallgrass.
 * Large Fern
 * Can be made by applying Bonemeal to Fern.
 * 3 new variants of Monster Egg
 * Mossy Stone Brick, Cracked Stone Brick and Chiseled Stone Brick
 * New /summon command to spawn entities
 * Usage:

Changes

 * The ability to select multiple resource packs at once.
 * Resource packs at the top take precedence over those below.
 * Allows for non-manual merging of textures from multiple packs, a sound pack and a different texture pack, etc.
 * Flint and Steel is now a shapeless recipe.
 * A Creeper will explode after igniting it with a flint and steel.
 * Several lighting issues fixed.
 * A lot fewer "black spots" in the terrain generator.
 * Torch bugs in strongholds and mineshafts have been fixed.
 * Rewrite of several option screens.
 * A completely new options menu.
 * A new "Select Resource Pack" menu.
 * Rewrote Key Config.
 * Function and sprint keys can be changed.
 * By default, sprinting can be activated by holding down the left control key. In Creative mode, this can also be done while flying.
 * The original sprinting controls (double-tap forward or double-tap backward while holding down forward) still function.
 * Smooth mouse, formerly available by pressing F8, will now use F4 by default.
 * The volume of in game music, Jukebox and Note Block music, hostile mobs, passive mobs, players, weather, blocks/environment, and the master volume can now all be modified separately.
 * Written Books can now be cloned the same way maps can, but by using Book and Quills instead of Empty Maps
 * Can clone multiple copies of the same Written Book by putting more Book and Quills in the crafting grid
 * Item Frames
 * Now drop the item inside them when punched, then drop themselves if they are punched when empty
 * Will display the name of the item they hold (if it is custom named) when looked at up close
 * Sugar Cane changes color depending on biome (Texture is unchanged, adding biome color makes it appear different)
 * Rewrite of the achievements and statistics system
 * Now ties in with the scoreboard system - added 744 new objective criteria that were previously tracked with statistics and achievements
 * Are now per world/server
 * Achievements screen can now be zoomed in and out using the mouse wheel.
 * Achievements don't appear on the achievements screen if more than five achievements need to be achieved first (i.e. "DIAMONDS!" doesn't appear until "Getting Wood" is achieved).
 * Data for a block, item, or mob doesn't appear in their respective tab in the Statistics screen unless the player has crafted/placed/mined that block, crafted/used/depleted that item, or killed/was killed by that mob.
 * New achievements: Repopulation, Adventuring Time, The Beginning?, The Beginning., and Beaconator
 * New statistics: Distance by Horse, Junk Fished, and Treasure Fished
 * New scoreboard functions
 * Can now use statistics to create objectives; anything that statistics can track can be used as an objective (can also track achievements)
 * This is the reason why statistics/achievements were changed to be stored per world/server
 * The /give command can now give items to players with custom names and lore
 * It can also give enchanted items.
 * Example: /give  {display:{Name:"",Lore:["",""]},ench:[0:{id: ,lvl: }]}
 * It can also give items with custom NBT tags, such as SkullOwner to obtain the Head of a specific player
 * This removes the necessity to use an NBT editing program to obtain these items.
 * Attribute modifiers have been added to the /give command (not completely investigated as of yet).
 * Example: To give a diamond sword with +50 Attack Damage to the nearest player, use the command /give @p 276 1 0 {AttributeModifiers:[0:{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:50,Operation:0,UUIDLeast:894654,UUIDMost:2872}]}
 * This enables the possibility of additional attributes to items using commands without the use of an NBT editing program.
 * Command blocks now show what command it ran recently.
 * The /time set day command now sets the time to 1000 instead of 0
 * Increased fog distance
 * Weighted Pressure Plates now output a signal relative to the amount of entities on them, always starting at 1 signal strength if any entities are present
 * For Light Weighted Pressure Plates, every entity adds 1 strength to the signal
 * For Heavy Weighted Pressure Plates, starting at 1, every 10 entities adds 1 strength to the signal (Example: 11 entities increases signal strength to 2)
 * Improved fishing
 * Changes to fishing mechanics
 * More rewards: some good, some bad
 * Treasure: 6 items total, including enchanted fishing rods, enchanted bow, enchanted books, name tags, lilypads, saddles
 * Junk: 13 items total, including damaged fishing rods, Water Bottles, rotten flesh, string, leather, bowls, sticks, bones, tripwire hooks, ten stacked Ink Sacs, or damaged leather boots
 * Melons now generate in Jungles
 * Rivers have gravel patches and the Deep Ocean (a new technical biome) bottom is covered with it
 * Changes to oceans
 * Oceans are smaller and take up much less of the map
 * Changes to Taiga
 * Taiga biomes no longer receive snowfall below y=120.
 * Changes to Swampland
 * Grass is greener and fluctuates more in color, depending on biome temperature.
 * In shallower parts, the coast is covered in staggered dirt blocks.
 * Changes to Extreme Hills
 * Generation tends to include more flat areas, and more extreme mountainous regions.
 * Stone is generated more frequently than in the previous versions, even outside of Extreme Hills+ Biomes.
 * Biomes have been put into four main categories
 * Snow-covered
 * Cold
 * Medium
 * Dry/warm
 * Biomes will attempt to avoid getting placed next to a biome that is too different to itself
 * Changed the display item for the Decoration Blocks tab in the Creative mode inventory from the Rose to the new Peony flower
 * Tall grass, ferns, double tall grass, and large ferns display their coloring from foliage.png
 * Flowers will now burn.
 * Flowers will not be placed dead center on a block, but have certain variations in which they are placed.
 * Dead Bushes can now be placed on Hardened Clay and Stained Clay.

Fixes
30 bugs fixed

From released versions before 1.7.2
 * – V-Sync in Window mode, settings not activated between sessions.
 * – Armor with Protection on it seems to reduce against hunger damage
 * – Black lighting under overhangs
 * – Attempting to tp to an invalid coordinate returns "commands.generic.double.invalid"
 * – Baby zombies do not drop any loot / xp
 * – Saplings placed on farmland are not affected by bone meal
 * – 10 MB server texture pack limit too small
 * – Night time doesn't immediately allow sleep
 * – The generation of terrain surface layer produces local straight glitches
 * – Silverfish enter chiseled stone brick, and the chiseled stone brick appears as normal stone brick
 * – Incorrect usage string for `/scoreboard teams empty`
 * – when a pig gets struck by lightning it spawns without a sword
 * – Sometimes Water flows out of newly generated Village Farms
 * – RCON and Scoreboard Command Output Formatting
 * – Missing usage string commands.scoreboard.players.list.usage
 * – Scoreboard team join command fails on invalid team name
 * – Scoreboard option seeFriendlyInvisibles not listed in usage
 * – the letters for the 'off' setting on smooth lighting aren't capitalized
 * – Minecraft crashes if you click edit or delete on a LAN game
 * – start up failure: IllegalStateException: "Cannot determine close requested state of uncreated window"
 * – "Reached end of stream" messages in Minecraft server terminal when client pings the server
 * – Packet250CustomPayload(dk)
 * – Invalid teamcolors throw an NPE in the console rather than an error message "invalid color"
 * – Server resource packs not implemented yet
 * – Animals running forever after being hit
 * – confirmation text is wrong
 * – teams option color: Tab doesnt list all options.
 * – Bug: the command block can be damaged by the explosion of blue wither skulls
 * – Jukeboxes play at the sound volume for effects until you change the music volume
 * – Oceans are too big

Reupload
13w36a was reuploaded on September 6, 2013, to fix a variety of bugs.


 * Fixed weird language selection
 * Attempt to fix Mesa biomes, but the fix did not work.
 * Fixed names of Grass Block and Dirt

Trivia

 * 13w36a holds the record as having the most content in one developmental release, having as much content in it as the Pretty Scary Update had in its full release.