Now with twice as much Java version.

Starting with this snapshot, Candles, Bundles, and Sculk Sensors are only accessible through commands. We do not feel that they are at the quality we want for Part 1 of the Caves & Cliffs release. To keep trying these features out in survival mode, use the Preview data pack!

Changes in 21w19a

The maximum length of item names in the anvil UI has been increased from 35 to 50
Made geodes significantly rarer
Unfinished items (Sculk Sensor, Bundle and Candles) have been removed from the creative inventory
Recipes for unfinished items (Bundle, Candles) have been removed

Changes to the Caves & Cliffs Preview

Download the updated datapack.

The pack now includes recipes related to bundles and candles

Technical changes in 21w19a

Upgraded to Java 16
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.
Changed the syntax of the /item command

Java 16

Minecraft now uses a more recent version of Java. If you are using a default setup the Launcher will download and install the correct version. If you are using a custom Java setup or a third-party launcher, you will need to ensure that your Java installation is version 16 or above.

Item command

New syntax:

/item replace <target> with <item stack> [<count>] - same as old replaceitem
/item replace <target> from <source> [<modifier>] - copies item for source to target(s), optionally applying modifier
/item modify <target> <modifier> - modifies item (without copying)

For example, /item replace block ~ ~ ~ container.0 from entity @s enderchest.0 will copy first item from player's enderchest to first slot of container player is currently standing on.

Bugs fixed in 21w19a

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-200009 Crash when using a non-mushroom block in a huge mushroom feature's cap
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-214220 Items in water streams don't fall from big dripleaves, but constantly try
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-221309 Experience orbs produce particles whilst moving through powder snow
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-223227 Floating water caves in caves under the ocean
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-224322 Powder snow can create ghost blocks in creative mode
MC-224325 minecraft.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
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

Minecraft Snapshot 21w19a