25w09a — release journal

What 25w09a changed for data packs, measured against 25w08a, the build before it. Released 2025-02-26; development build — not a release.

📌 Additive

15 entries added and nothing removed. Existing packs keep their references; new content is available.

Formats

25w08a25w09a
Data pack format68.069.0 moved
Resource pack format53.053.0
Data version43164317

Registries

15 entries added and 0 removed across 4 registries.

RegistryChangeAddedRemoved
worldgen/configured_featurechangedfallen_birch_tree, fallen_jungle_tree, fallen_oak_tree, fallen_spruce_tree, fallen_super_birch_tree, trees_badlands, trees_birch, trees_snowy—
worldgen/featurechangedfallen_tree—
worldgen/placed_featurechangedfallen_birch_tree, fallen_jungle_tree, fallen_oak_tree, fallen_spruce_tree, fallen_super_birch_tree—
worldgen/tree_decorator_typechangedattached_to_logs—

The official notes

Read the 25w09a article on minecraft.net.

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

Minecraft Wiki page for 25w09a.

In the journal

← 25w08a · All builds · 25w09b →

Sources