1.21.4 — release journal
What 1.21.4 changed for data packs, measured against 1.21.4-rc3, the build before it. Released 2024-12-03; full 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-rc3 | 1.21.4 | |
|---|---|---|
| Data pack format | 61.0 | 61.0 |
| Resource pack format | 46.0 | 46.0 |
| Data version | 4188 | 4189 |
Registries
No registry gained, lost or changed an entry.
The official notes
Read the 1.21.4 article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- The Data Generator
- Network Protocol
- Data Pack Versions 58 through 61
- Commands
- Tags
- Furnace, Smoker and Blast Furnace Data
- TNT Minecart Data
- Text Components
- Item Components
- Item Modifiers
- Custom World Generation
- Resource Pack Version 43 through 46
- New Resources
- Renames
- GUI Sprites
- Item models
Minecraft Wiki page for 1.21.4.
In the journal
← 1.21.4-rc3 · All builds · 25w02a →
Sources
- misode/mcmeta — 1.21.4 summary — formats and registries, generated from the game’s own data.
- minecraft.net — 1.21.4 — section names only.