25w02a — release journal

What 25w02a changed for data packs, measured against 1.21.4, the build before it. Released 2025-01-08; development build — not a release.

⚠ Entries removed

12 registry entries were removed. A pack that names one of them will fail to parse where it does.

Formats

1.21.425w02a
Data pack format61.062.0 moved
Resource pack format46.047.0 moved
Data version41894298

Registries

139 entries added and 12 removed across 23 registries.

RegistryChangeAddedRemoved
pig_variantnew registrycold, temperate, warm—
ticket_typenew registrydragon, ender_pearl, forced, player_loading, player_simulation, portal, start, unknown—
advancementchangedrecipes/misc/leaf_litter, recipes/misc/yellow_dye_from_wildflowers—
blockchangedleaf_litter, wildflowers—
block_definitionchangedleaf_litter, wildflowers—
block_typechangedflower_bed, leaf_litterparticle_leaves, pink_petals
data_component_typechangedpotion_duration_scale, weapon—
entity_sub_predicate_typechangedpig—
itemchangedleaf_litter, wildflowers—
item_definitionchangedleaf_litter, wildflowers—
loot_tablechangedblocks/leaf_litter, blocks/wildflowers—
modelchangedblock/creaking_heart_awake, block/creaking_heart_awake_horizontal, block/creaking_heart_dormant, block/creaking_heart_dormant_horizontal, block/leaf_litter_1, block/leaf_litter_2, block/leaf_litter_3, block/leaf_litter_4, block/template_leaf_litter_1, block/template_leaf_litter_2, block/template_leaf_litter_3, block/template_leaf_litter_4, block/wildflowers_1, block/wildflowers_2, block/wildflowers_3, block/wildflowers_4, item/leaf_litter, item/wildflowersblock/creaking_heart_active, block/creaking_heart_active_horizontal
particle_typechangedtinted_leaves—
recipechangedleaf_litter, yellow_dye_from_wildflowers—
soundchangedblock/iron/break1, block/iron/break2, block/iron/break3, block/iron/break4, block/iron/break5, block/iron/break6, block/iron/break7, block/iron/break8, block/iron/step1, block/iron/step2, block/iron/step3, block/iron/step4, block/leaf_litter/leaf_litter_break1, block/leaf_litter/leaf_litter_break2, block/leaf_litter/leaf_litter_break3, block/leaf_litter/leaf_litter_break4, block/leaf_litter/leaf_litter_break5, block/leaf_litter/leaf_litter_place1, block/leaf_litter/leaf_litter_place2, block/leaf_litter/leaf_litter_place3, block/leaf_litter/leaf_litter_place4, block/leaf_litter/leaf_litter_place5, block/leaf_litter/leaf_litter_step1, block/leaf_litter/leaf_litter_step2, block/leaf_litter/leaf_litter_step3, block/leaf_litter/leaf_litter_step4, block/leaf_litter/leaf_litter_step5, block/leaf_litter/leaf_litter_step6—
sound_eventchangedblock.iron.break, block.iron.fall, block.iron.hit, block.iron.place, block.iron.step, block.leaf_litter.break, block.leaf_litter.fall, block.leaf_litter.hit, block.leaf_litter.place, block.leaf_litter.step—
tag/blockchangedreplaceable_by_mushrooms, sword_instantly_mines—
tag/itemchangedbook_cloning_target—
tag/worldgen/biomechangedspawns_cold_variant_farm_animals, spawns_warm_variant_farm_animals—
texturechangedblock/creaking_heart_awake, block/creaking_heart_dormant, block/creaking_heart_top_awake, block/creaking_heart_top_dormant, block/leaf_litter, block/wildflowers, block/wildflowers_stem, entity/pig/cold_pig, entity/pig/warm_pig, item/wildflowers, particle/leaf_0, particle/leaf_1, particle/leaf_10, particle/leaf_11, particle/leaf_2, particle/leaf_3, particle/leaf_4, particle/leaf_5, particle/leaf_6, particle/leaf_7, particle/leaf_8, particle/leaf_9block/creaking_heart_active, block/creaking_heart_top_active
worldgen/configured_featurechangedbirch_bees_0002_leaf_litter, birch_leaf_litter, dark_oak_leaf_litter, fancy_oak_bees_0002_leaf_litter, fancy_oak_leaf_litter, oak_bees_0002_leaf_litter, oak_leaf_litter, patch_grass_meadow, patch_leaf_litter, trees_birch_and_oak_leaf_litter, wildflowers_birch_forest, wildflowers_meadowfancy_oak_bees_0002, oak_bees_0002, trees_birch_and_oak
worldgen/placed_featurechangedbirch_bees_0002_leaf_litter, birch_leaf_litter, dark_oak_leaf_litter, fancy_oak_bees_0002_leaf_litter, fancy_oak_leaf_litter, oak_bees_0002_leaf_litter, oak_leaf_litter, patch_grass_meadow, patch_leaf_litter, trees_birch_and_oak_leaf_litter, wildflowers_birch_forest, wildflowers_meadowfancy_oak_bees_0002, oak_bees_0002, trees_birch_and_oak
worldgen/tree_decorator_typechangedplace_on_ground—

The official notes

Read the 25w02a article on minecraft.net.

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

Minecraft Wiki page for 25w02a.

In the journal

← 1.21.4 · All builds · 25w03a →

Sources