1.21.4 Release Candidate 3 — release journal

What 1.21.4-rc3 changed for data packs, measured against 1.21.4-rc2, the build before it. Released 2024-11-29; 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

1.21.4-rc21.21.4-rc3
Data pack format61.061.0
Resource pack format46.046.0
Data version41864188

Registries

No registry gained, lost or changed an entry.

The official notes

Read the 1.21.4 Release Candidate 3 article on minecraft.net.

The article has no technical-changes section — it lists bug fixes only, or predates that heading.

Minecraft Wiki page for 1.21.4-rc3.

In the journal

← 1.21.4-rc2 · All builds · 1.21.4 →

Sources