20w21a — release journal
What 20w21a changed for data packs, measured against 20w20b, the build before it. Released 2020-05-20; development build — not a release.
⚠ Breaking for data packs
This build removed 2 registries. Any file that referenced them stops loading. biome_source_type looks renamed to biome_source (100% of its entries reappear there) — in those cases the fix is likely moving files, not rewriting them.
Formats
| 20w20b | 20w21a | |
|---|---|---|
| Data pack format | 5.0 | 5.0 |
| Resource pack format | 5.0 | 5.0 |
| Data version | 2537 | 2554 |
Registries
18 entries added and 27 removed across 8 registries.
| Registry | Change | Added | Removed |
|---|---|---|---|
biome_source_type | registry removed — likely renamed to biome_source | — | checkerboard, fixed, multi_noise, the_end, vanilla_layered |
dimension_type | registry removed | — | overworld, the_end, the_nether |
biome_source | new registry | checkerboard, fixed, multi_noise, the_end, vanilla_layered | — |
chunk_generator | new registry | debug, flat, noise | — |
block_state_provider_type | changed | rotated_block_provider | — |
feature | changed | — | bastion_remnant, buried_treasure, desert_pyramid, end_city, igloo, jungle_temple, mineshaft, nether_bridge, nether_fossil, ocean_monument, ocean_ruin, pillager_outpost, ruined_portal, shipwreck, stronghold, swamp_hut, village, woodland_mansion |
sound_event | changed | entity.donkey.eat, entity.fox.teleport, entity.mule.angry, entity.mule.eat, entity.parrot.imitate.hoglin, entity.parrot.imitate.piglin, entity.parrot.imitate.zoglin | — |
texture | changed | gui/title/mojangstudios, item/nether_sprouts | gui/title/mojang |
The official notes
Read the 20w21a article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- Commands
- spreadplayers
- locate
- Custom Worlds
Minecraft Wiki page for 20w21a.
In the journal
← 20w20b · All builds · 20w22a →
Sources
- misode/mcmeta — 20w21a summary — formats and registries, generated from the game’s own data.
- minecraft.net — 20w21a — section names only.