We're now releasing Minecraft: Java Edition 1.17.1. This release changes some behaviours of the features added in Caves & Cliffs: Part I, and it also fixes a few bugs and critical issues.

Changes in 1.17.1

Blue axolotls can now only be obtained through breeding
Non-screaming goats now have a rare chance to produce a screaming goat when bred
Status effects on goats now also apply when the goat is jumping or ramming
Raised the drop rate for copper ingots from Drowned to 11% + 2% per level of looting
Powder snow now fills cauldrons 2 times faster than before (still pretty slowly, though!)
Zombies, Zombie Villagers, Husks and Drowned will no longer pick up glow ink sacs

Technical Changes in 1.17.1

Deaths of named mobs are now logged
In case of DNS-based redirection, the client will send the hostname actually used to connect (this restores the pre-1.17 behaviour)

Fixed bugs in 1.17.1

MC-123654 - "Sun, moon, and/or clouds are not showing if render distance is below 4"
MC-131290 - "Enchantments are saved as shorts, but are loaded as and function with integer values"
MC-156155 - Turkish lira sign (₺) appears as □ in the game
MC-194736 - Duplicate text mapping for U+00B7
MC-196999 - U+1FEC is wrong in Minecraft's font
MC-213986 - Pistons and dispensers can be used to create ghost blocks using powder snow
MC-219018 - Ghost items can be created using /item (server doesn't update client inventory correctly)
MC-219290 - Calcite is too quiet compared to other blocks
MC-221656 - Creative mode obtained Bucket of Axolotl/Tropical Fish only spawns one kind axolotl/tropical fish
MC-222731 - Captured axolotl constantly tries to leave water
MC-223350 - Loaded chunks sometimes don't render until the player moves their head slightly
MC-223368 - Strength and weakness potions / custom attack damage attributes does not change damage from goats
MC-224894 - Light tickets are released too early
MC-225816 - Hanging Roots appear large when an item entity
MC-226461 - Logs can be replaced with stone near lava pools
MC-226505 - Goat's long jump is not affected by the jump boost effect
MC-226512 - Goats do not use the damage of held items when ramming entities
MC-226926 - Emerald ore generates too often
MC-226948 - Withers are now affected by potion effects
MC-227387 - World gen datapacks will likely crash or softlock the game
MC-227435 - Lag when placing heads of non-existent players when on servers
MC-227483 - root_system feature config's codec uses a wrong field
MC-227520 - Overworld Fossils always generate at bedrock level
MC-227557 - End portal texture appears stretched after world conversion
MC-227618 - Small dripleaf is consumed without being placed when used on tall seagrass
MC-227651 - Group for lapis lazuli ore smelting and blasting recipes is misspelled
MC-227821 - Client crash when trying to create/edit realm immediately after deleting previous one
MC-227891 - Ender pearls despawn when player logs out of a server
MC-228219 - Thrown ender pearls disappear upon entering the exit end portal
MC-228343 - java.lang.NullPointerException when random_selector default feature isn't found
MC-228430 - "Very long loading pause while booting the game (""Failed to add PDH Counter"", caused by oshi)"
MC-228599 - Attempting to walk through flowing water constantly switches the player from swimming into normal mode
MC-228802 - "Chunks not loading on a server / Cannot invoke ""cmq.a(int, int, int)"" because ""☃"" is null"
MC-228828 - "Specifying the --server parameter when starting the game, causes the game to crash"
MC-228858 - Axolotls despawning though named and on leashes.
MC-229169 - Piglins can no longer hear players breaking protected blocks through walls
MC-229191 - Diamond ore distribution changed between 1.16.5 and 1.17
MC-229246 - Piglins and piglin brutes no longer call other piglins after attacking one of them behind walls
MC-229299 - Blue axolotls can spawn naturally
MC-229441 - You can steal the item a villager is holding for trade by killing it
MC-229614 - Wandering Trader obtained tropical fish are only white kob
MC-230716 - """death.attack.dryout"" and ""death.attack.dryout.player"" display raw translation strings (are untranslated)"