26.3 Release Candidate 2 — release journal
What 26.3-rc-2 changed for data packs, measured against 26.3-rc-1, the build before it. Released 2026-09-11; 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
| 26.3-rc-1 | 26.3-rc-2 | |
|---|---|---|
| Data pack format | 121.0 | 121.0 |
| Resource pack format | 97.1 | 97.1 |
| Data version | 5020 | 5021 |
Registries
No registry gained, lost or changed an entry.
The official notes
Read the 26.3 Release Candidate 2 article on minecraft.net.
The article has no technical-changes section — it lists bug fixes only, or predates that heading.
In the journal
← 26.3-rc-1 · All builds · 26.3-rc-3 →
Sources
- misode/mcmeta — 26.3-rc-2 summary — formats and registries, generated from the game’s own data.
- minecraft.net — 26.3 Release Candidate 2 — section names only.