25w09b — release journal
What 25w09b changed for data packs, measured against 25w09a, the build before it. Released 2025-02-27; development build — not a release.
💡 No measured change
Same data pack format, same registries. That is the strongest safe-for-data-packs signal a diff can give, and it is still not proof — behaviour changes and bug fixes are invisible to it.
Formats
| 25w09a | 25w09b | |
|---|---|---|
| Data pack format | 69.0 | 69.0 |
| Resource pack format | 53.0 | 53.0 |
| Data version | 4317 | 4318 |
Registries
No registry gained, lost or changed an entry.
The official notes
Read the 25w09b article on minecraft.net.
The article has no technical-changes section — it lists bug fixes only, or predates that heading.
Minecraft Wiki page for 25w09b.
In the journal
← 25w09a · All builds · 25w10a →
Sources
- misode/mcmeta — 25w09b summary — formats and registries, generated from the game’s own data.
- minecraft.net — 25w09b — section names only.