25w45a — release journal

What 25w45a changed for data packs, measured against 25w44a, the build before it. Released 2025-11-04; development build — not a release.

⚠ Breaking for data packs

This build removed 1 registry. Any file that referenced them stops loading.

Formats

25w44a25w45a
Data pack format92.093.0 moved
Resource pack format72.073.0 moved
Data version46594660

Registries

47 entries added and 5 removed across 16 registries.

RegistryChangeAddedRemoved
scheduleregistry removed—empty, simple, villager_baby, villager_default
tag/timelinenew registryin_end, in_nether, in_overworld, universal—
timelinenew registryday, early_game, moon, villager_schedule—
zombie_nautilus_variantnew registrytemperate, warm—
advancementchangedadventure/spear_many_mobs, recipes/combat/netherite_horse_armor_smithing—
atlaschangeditems—
attribute_typechangedactivity, angle_degrees, moon_phase, tri_state—
data_component_typechangedzombie_nautilus/variant—
environment_attributechangedaudio/firefly_bush_sounds, gameplay/baby_villager_activity, gameplay/bees_stay_in_hive, gameplay/can_pillager_patrol_spawn, gameplay/cat_waking_up_gift_chance, gameplay/creaking_active, gameplay/eyeblossom_open, gameplay/monsters_burn, gameplay/sky_light_level, gameplay/surface_slime_spawn_chance, gameplay/turtle_egg_hatch_chance, gameplay/villager_activity, visual/moon_angle, visual/moon_phase, visual/sky_light_color, visual/sky_light_factor, visual/star_angle, visual/star_brightness, visual/sun_angle, visual/sunrise_sunset_color—
itemchangednetherite_horse_armor—
item_definitionchangednetherite_horse_armor—
modelchangeditem/netherite_horse_armor—
recipechangednetherite_horse_armor_smithing—
tag/worldgen/biomechangedspawns_coral_variant_zombie_nautiluswithout_patrol_spawns
texturechangedentity/equipment/horse_body/netherite, entity/nautilus/zombie_nautilus_coral, item/netherite_horse_armor—
trigger_typechangedspear_mobs—

The official notes

Read the 25w45a article on minecraft.net.

That article's technical changes are grouped under these headings — open it for the detail:

Minecraft Wiki page for 25w45a.

In the journal

← 25w44a · All builds · 25w46a →

Sources