🔗 Minecraft Snapshot 21w37a

🆕 New Features
- Added noise caves and aquifers
- Added Dripstone Caves underground biome
- Added Grove biome
- Added Lofty peaks biome
- Added Lush Caves underground biome

🔃 Changes
- Illagers (Vindicator, Pillager, Evoker) no longer attack baby villagers
- Axolotls now only spawn in lush caves
- Axolotls now have their own, separate, mob cap
- Raised the cloud level from 128 to 192

⚙️ Technical Changes
- Replaced the clientbound chunk update network packet with another one which additionally contains light update data. A separate light update packet still exists and is sent when a light update happens without chunk update.
- View distance now causes chunks to load cylindrically around players instead of in a square
- Information about the world generation noise is now displayed on the debug screen
- Added illageralt, rune-like font from Minecraft Dungeons (currently only usable via commands)
- Added startup option --jfrProfile and command jfr to start profiling with Java FlightRecorder as well as a few custom events.

🐛 Fixed Bugs
- MC-29274: Withers will not pursue players in survival mode unless attacked
- MC-30560: River through Eroded Badlands biome generates floating rock formations at water surface
- MC-54545: Client render distance doesn’t adjust to server render distance if they are different, causing faulty chunk loading
- MC-65628: Desert pyramids generate underground when using amplified or custom terrain
- MC-123277: Too long scoreboard objectives and team names are not detected when commands are parsed

🔗 Minecraft Snapshot 21w38a

🔃 Changes
- Sprinting is no longer reduced to walking when gently brushing your sleeve against a wall
- Fixes for the distribution of ores

⚙️ Technical Changes
- A new setting has been added: “Simulation distance”
- Maximum amount of background threads increased
- Added telemetry for world loading

🐛 Fixed Bugs
- MC-44055: Game fails to switch the audio output from one device to another after the game has started (from title screen)
- MC-236611: No sound for using shears on weeping, twisting, cave vines or kelp
- MC-236618: Strongholds don’t generate in 21w37a
- MC-236621: Liquids sometimes do not propagate
- MC-236633: Random light level of 0 in sky

🔗 Minecraft Snapshot 21w39a

🆕 New Features
- Added Caves & Cliffs: Part II Advancements

🔃 Changes
- The lone trees in Meadows now always contain a bee nest
- Drowned can spawn in aquifers inside dripstone caves
- Zombies don’t spawn in dripstone caves
- Buried treasure chests can now contain water breathing potions
- Changed default brightness to 50

⚙️ Technical Changes
- Added fall_from_height and ride_entity_distance advancement triggers
- Changed nether_travel to match other similar triggers
- Added new loot table function set_potion
- Changes to the on-disk chunk format
- Resource pack format has been increased to 8

🐛 Fixed Bugs
- MC-116359: Status effects aren’t displayed in inventory when recipe book is open
- MC-149822: Bottom border on status effect displays in the inventory is missing
- MC-193348: Status effect bars shift the player’s inventory in creative mode
- MC-196723: Potion effects obtained in creative mode while in inventory do not show up until reopening inventory
- MC-214894: Bamboo generates in caves under jungles

🔗 Technical changes in 21w40a

🔃 Changes
- World generation tweaks
- Changes to mob spawning
- Copper Ore now drops 2-5 (from 2-3) Raw Copper items
- In the Stonecutter, a Block of Copper can be converted to four Cut Copper
- A bunch of biome variants with similar features but different shapes have been merged into one since the shape is controlled independently now

⚙️ Technical Changes
- Optimized AI for Axolotls, Goats, Hoglins, Zoglins, Piglins, Piglin Brutes and Villagers
- Bedrock layers generate dependent on the world seed now

🐛 Fixed Bugs
- MC-132306: Snowy grass without snow near lakes in snowy biome
- MC-169523: As of 18w06a, the sand, clay and gravel blocks no longer generate around small lakes
- MC-197688: Mountain Edge never generates
- MC-217906: Large amounts of axolotls cause performance issues
- MC-225842: Flowers can generate on large plants near lakes

🔗 Minecraft Snapshot 21w41a

🔃 Changes
- The main menu backdrop now shows a Caves & Cliffs: Part II scene
- Badlands mineshafts generate higher up
- Geodes now only generate up to height 30 and their rarity has been adjusted to match 1.17 levels
- The angle at which sprinting against a block does not break your sprint has been increased a bit

⚙️ Technical Changes
- Changed the prioritization order of the chunk rendering pipeline
Unrendered chunk holes in the world should not appear anymore while flying fast with a high render distance


- Server classes are now signed
- New random number generator for Overworld generation

🐛 Fixed Bugs
- MC-118134: Item frame texture as an item uses texture of oak planks
- MC-137950: Signs textures does not correspond to the actual texture of their handle
- MC-142385: Campfire texture has one pixel extending into hotbar outline
- MC-148182: The zombie villager "profession" texture uses villager-skin-colored pixels
- MC-152506: Wither skull projectile has faces with old texture

🔗 Minecraft Snapshot 21w42a

🆕 New Features
- New music has been added to the game
- Added world autosave indicator for single-player worlds

🔃 Changes
- World spawn selection algorithm has been reworked, now spawns player according to climate parameters
- World generation tweaks

⚙️ Technical Changes
- Replaced light and barrier particles with block_marker

🐛 Fixed Bugs
- MC-129912: Player no longer spawned at highest level at world spawn
- MC-132347: Spawning inside icebergs
- MC-214288: Player does not spawn on the surface of the world when min_y is greater than 0
- MC-233771: Parity issue: Light blocks do not display their light level when shown via a held light block item
- MC-236837: The player can occasionally spawn underground when loading into a new world

🔗 Minecraft Snapshot 21w43a

🆕 New Features
- The edge between old and new world generation is now adjusted when you upgrade a world

🔃 Changes
- The Priority Updates video setting has been renamed to Chunk Builder
- Reduced the amount of flooded caves near river and ocean coastlines
- Aquifer water levels change less often, so you’ll more often have larger areas with the same water level. This means slightly fewer underground waterfalls and slightly easier underground boat travel
- Lava aquifers are slightly less common
- Restricted Big Dripleaf placement to Clay, Grass, Dirt, Farmland, Moss, Rooted Dirt, Podzol and Mycelium

⚙️ Technical Changes
- Some internal details of block and fluid ticking have been changed to improve save times. While it should behave exactly as it was, it might be a good time to test your redstone contraptions (on a copy of a world or with a backup, of course)
- The Chunk format has been updated

🐛 Fixed Bugs
- MC-131930: Deep warm ocean generates without coral and sea pickles
- MC-156616: Badlands layers not generating properly
- MC-217379: Pufferfish don’t spawn in deep warm ocean
- MC-236624: Deep Warm Oceans don’t count towards the “Adventuring Time” advancement
- MC-236970: Badlands strata is covered by orange terracotta at Y=160 and above

🔗 Minecraft Snapshot 21w44a

🆕 New Features
- 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
- 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
- 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
- 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

🔗 Minecraft 1.18 Pre-Release 1

🔃 Changes
- Amplified and Large biome worlds have been adapted to the new terrain and are now once again available in the Create World screen
- Removed world types “Caves” and “Floating islands” from the world creation screen
- The transition between new and old terrain is less “cliffy”
Will surface height blend? Yes
Will biomes blend? Yes
Will caves blend? Your mileage may vary



⚙️ Technical Changes
- --report option in data generator now creates full worldgen reference files instead of just biomes

🐛 Fixed Bugs
- MC-46584: Clicking and dragging MOUSE3 (Mouse wheel) over item slots incorrectly attempts to place full stacks in survival
- MC-53444: You can get outside of the worldborder by mounting a rideable entity (boat, pig, etc.) outside of it
- MC-54119: Can place/take water/lava/lilypads outside worldborder and inside spawn protection
- MC-62550: Worldborder not correctly initialized for the End and Nether
- MC-96535: Ambient property of potion effects with ShowParticles:0b is not disregarded

🔗 Minecraft 1.18 Pre-Release 2

🐛 Fixed Bugs
- MC-32813: Floating water / lava above caves / cave carver doesn’t update water
- MC-206303: Minecarts have old textures on the bottom
- MC-214963: Mineshaft generation is non-deterministic
- MC-217038: Large dripstone structures can be generated outside the caves
- MC-217056: Some high-speed particles lag/freeze the game

Minecraft 1.18 Pre-release 5

https://www.minecraft.net/en-us/article/minecraft-1-18-pre-release-2#5

🔗 Minecraft 1.18 Pre-Release 6

🔃 Changes
- The numbers of features in cave biomes have been tweaked

⚙️ Technical Changes
- The game now saves chunks whenever there is time spare to reduce autosave spikes

🐛 Fixed Bugs
- MC-236947: Signature attribute is stripped from java records
- MC-238930: Soul Sand and Soul Soil generate below the nether ceiling
- MC-238959: Falling block placing at Y=1 changes into dropped item when landing on Y=0
- MC-239880: Some chunks have missing blocks below 0
- MC-239900: Upgrading custom world to 21w43a ignores min_y and height

🔗 Minecraft 1.18 Release Candidate 1

⚙️ Technical Changes
- Size limit for server resource packs has been increased from 100 MB to 250 MB

🐛 Fixed Bugs
- MC-242708: Moving through blocks in spectator mode causes a memory leak

🔗 Caves & Cliffs: Part II out today on Java

🆕 New Features
- Added an “Allow Server Listings” option to opt out of having your name displayed in server listings
- Added an Online options screen where you can now find the Realms Notifications option
- Added new Overworld biomes
- Added noise caves and aquifers
- Added world autosave indicator for single-player worlds

⚙️ Technical Changes
- Added an accessibility option to stop the sky from flashing during thunderstorms
- Added fall_from_height and ride_entity_distance advancement triggers
- Changed nether_travel to match other similar triggers
- Added an option to specify the audio device used by the game
- Replaced light and barrier particles with block_marker