Bedrock Edition 1.17.20

1.17.20 is an upcoming minor update to with no set release date, which will bring additional parity with, and fix bugs.

Development phases contain some of the Caves & Cliffs: Part II features through experimental gameplay, which will not be included in the full release but will be part of 1.18.0.

Command format

 * Options
 * Added new "Respawn Blocks Explode" in the world settings.
 * Used to prevent beds exploding in the nether and respawn anchor exploding in the overworld.

Experimental

 * GameTest Framework
 * GameTest
 * Added helper method spawnAtLocation(location : Location) : Entity
 * Spawns an entity at the given Location
 * Added helper method walkToLocation(mob : Entity, location : Location, speedModifier : number)
 * Commands an entity to move to the given Location
 * Added method assertCanReachLocation(mob : Entity, location : BlockLocation, bool canReach)
 * Asserts that the given mob can reach the target block location
 * Events
 * Added event World.events.beforeExplosion
 * Fires before an explosion occurs
 * Added event World.events.explosion
 * Fires when an explosion occurs
 * Added event World.events.explodeBlock
 * Fires when a block breaks due to an explosion
 * Added event World.event.beforeActivatePiston
 * Fires before a piston is activated
 * Added event World.event.activatePiston
 * Fires when a piston is activated
 * Block
 * Added method getDimension : Dimension
 * BlockPistonComponent
 * Read-only property attachedBlocks
 * Returns an array containing the BlockLocation of each block attached to the piston
 * Read-only property isMoving
 * Returns true if the piston is expanding or retracting
 * Read-only property isExpanded
 * Returns true if the piston is fully expanded
 * Read-only property isExpanding
 * Returns true if the piston is expanding
 * Read-only property isRetracting
 * Returns true if the piston is retracting
 * Read-only property isRetracted
 * Returns true if the piston is fully retracted

Fixes

 * Caves And Cliffs
 * Worlds with the Caves & Cliffs experimental toggle enabled are now more likely to have the same default world spawn position as worlds without the experiment using the same seed


 * Vanilla Parity
 * Monster spawning in the Nether has been changed to more closely match Java Edition
 * There will now be a maximum of 15 to 20 mobs around the player in the Nether, instead of 30 to 40
 * Block interaction "click" sounds are now controlled by the "Blocks" volume slider
 * Swapped toggle sounds for levers so that they are now parity with Java Edition


 * General
 * Fixed a bug where the contents of a Shulker Box are deleted when dyeing from the recipe tab
 * Swords now break Bamboo in a single swing
 * Disabled biome tinting for Spruce and Birch Leaves
 * Using a Powder Snow Bucket on a Cauldron filled with Powder Snow no longer creates a new Powder Snow block
 * Using a Water Bucket on a fully filled Cauldron now produces the correct sound
 * Lava Buckets can now be emptied into a Cauldron filled with Lava
 * Cave Vines can now be pollinated by Bees
 * Enchantment Tables now emit light level 7
 * The falling position of Pointed Dripstone is no longer slightly offset (MCPE-119548}})
 * Powder Snow can now be collected with a Dispenser (MCPE-127564}})
 * Placing a Sign on Rooted Dirt now correctly opens the text editor
 * Target Blocks now conduct Redstone signals
 * Message/tell commands no longer fail when cheats are not activated
 * Teleporting a mob between dimensions no longer causes the mob to despawn
 * Fixed offhand Shields clipping into players’ arms while in third-person perspective
 * Minecart with Chest will now copy over its chest contents when pick blocked
 * Soul Speed Boots can now be unequipped properly after losing durability
 * Baby Goats no longer have horns
 * Diamond Pickaxes found in Hoglin Stable chests are now enchanted
 * Bubble Columns are now placed properly when loaded with a Structure Block


 * Sounds
 * Amethyst walking sounds are now affected by the "Player" audio setting
 * Deepslate walking sounds are now affected by the "Player" audio setting
 * Moss Block walking sounds are now affected by the "Player" audio setting
 * Sounds of moving in/on Powder Snow are now affected by the "Player" audio setting
 * Jumping and landing on blocks have now their sounds affected by the "Player" audio slider
 * Dripstone drip sounds are now affected by the "Block" audio slider
 * Turtle Eggs no longer produce the Bone Meal sound when placed on Sand
 * Big Dripleaf now has a distinct tilt up sound


 * User Interface
 * The Sign In dialog is no longer shown on a split-screen game to anyone other than the primary player on PlayStation 4
 * A debug string is no longer shown for how to open chat.


 * Technical
 * now has a vertical and horizontal strength value.