1.21 Pre-Release 1 — release journal
What 1.21-pre1 changed for data packs, measured against 24w21b, the build before it. Released 2024-05-29; development build — not a release.
⚠ Entries removed
1 registry entry was removed. A pack that names one of them will fail to parse where it does.
Formats
| 24w21b | 1.21-pre1 | |
|---|---|---|
| Data pack format | 45.0 | 46.0 moved |
| Resource pack format | 34.0 | 34.0 |
| Data version | 3947 | 3948 |
Registries
1 entries added and 1 removed across 2 registries.
| Registry | Change | Added | Removed |
|---|---|---|---|
enchantment_level_based_value_type | changed | lookup | — |
tag/block | changed | — | fire_aspect_lightable |
The official notes
Read the 1.21 Pre-Release 1 article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- Server links
- Data Pack Versions 42 through 46
- Enchantments
- Tags
- Loot tables
- Structures
Minecraft Wiki page for 1.21-pre1.
In the journal
← 24w21b · All builds · 1.21-pre2 →
Sources
- misode/mcmeta — 1.21-pre1 summary — formats and registries, generated from the game’s own data.
- minecraft.net — 1.21 Pre-Release 1 — section names only.