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

Bugs fixed 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

Minecraft Snapshot 21w44a