Minecraft Snapshot 21w44a

A Minecraft Java Snapshot

Another snapshot is now available. We've added new world generation below existing chunks, and blocks and fluids are now also part of the simulation distance setting. We also fixed a few bugs.

Keep in mind that we're still working on the world upgrades, so making a backup before upgrading is still a good idea.

Enjoy!

New Features in 21w44a

New world generation is now inserted under existing chunks when upgrading a world to the new world height
Added an Online options screen where you can now find the Realms Notifications option and Difficulty when on a server
Added an “Allow Server Listings” option to opt-out of having your name displayed in server listings

Changes in 21w44a

Sleeping now only resets the weather cycle if it was raining
Blocks and fluids are now also affected by simulation distance. It might be a good idea to test that the behavior of your redstone contraptions remained the same
Optimized entity collisions

Technical changes in 21w44a

Servers can now set property hide-online-players to true in order to not send a player list on status requests
When JFR profiling is started from an external source, the JFR events for network packets are now aggregated instead of one event per packet

Fixed bugs in 21w44a

MC-63340 - Sleeping always resets time until rain
MC-170551 - Foxes can’t spawn on podzol or coarse dirt
MC-200494 - In mineshafts, torches can generate attached to blocks other than the wooden supports
MC-216432 - Mineshafts can generate with light but without any torches
MC-216561 - Torches not spawning in abandoned mineshafts under y=0
MC-217038 - Large dripstone structures can be generated outside the caves
MC-236701 - New mountain biomes don’t count towards “Adventuring Time” advancement
MC-236938 - /jfr stop output does not have a link
MC-237986 - Mobs specific to structures aren’t spawning in their structures
MC-238062 - Foxes & Wolves don’t spawn in Groves
MC-238761 - Adventuring Time does not account for the new cave biomes
MC-238877 - Deep Ocean & Ocean is not needed for the “Adventure Time” advancement
MC-238900 - Values of ‘Infinity’ in noise settings in default worldgen
MC-238912 - Powder snow strips can’t generate exposed to the surface
MC-238962 - Icebergs go all the way to ocean floor.
MC-238966 - Old Growth Spruce Taiga and Old Growth Birch Forest aren’t part of the “Adventuring Time” advancement
MC-238968 - Windswept Gravelly Hills & Windswept Savanna aren’t apart of the “Adventuring Time” advancement
MC-239280 - Withers do not move down to follow the player when the wither’s health is half or lower
MC-239344 - All torches in mineshafts are facing the wrong way
MC-239359 - Wither Skeletons can only spawn on Nether Bricks
MC-239689 - The “amplified” boolean in noise settings does nothing
MC-239854 - Nether and caves world is missing bedrock
MC-239858 - Nether decorations can be generated on the original bedrock layer
MC-239866 - Terrain shaper in noise_settings is not used

Get the snapshot

Snapshots are available for Minecraft: Java Edition. To install the snapshot, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Snapshots can corrupt your world, so please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar: