21w39a — release journal
What 21w39a changed for data packs, measured against 21w38a, the build before it. Released 2021-09-29; development build — not a release.
⚠ Breaking for data packs
This build removed 1 registry. Any file that referenced them stops loading.
Formats
| 21w38a | 21w39a | |
|---|---|---|
| Data pack format | 8.0 | 8.0 |
| Resource pack format | 7.0 | 8.0 moved |
| Data version | 2835 | 2836 |
Registries
17 entries added and 10 removed across 10 registries.
| Registry | Change | Added | Removed |
|---|---|---|---|
worldgen/block_placer_type | registry removed | — | column_placer, double_plant_placer, simple_block_placer |
block_predicate_type | new registry | all_of, any_of, matching_blocks, matching_fluids, not, replaceable | — |
advancement | changed | adventure/caves_and_cliffs, adventure/ride_strider_in_overworld_lava, adventure/trade_at_world_height, husbandry/play_jukebox_in_meadows | — |
int_provider_type | changed | weighted_list | — |
loot_function_type | changed | set_potion | — |
worldgen/carver | changed | — | underwater_canyon, underwater_cave |
worldgen/configured_feature | changed | fancy_oak_bees, super_birch_bees | fancy_oak_bees_05, super_birch_bees_05 |
worldgen/decorator | changed | environment_scan | heightmap_spread_double, spread_32_above |
worldgen/feature | changed | block_column | growing_plant |
worldgen/noise_settings | changed | large_biomes | — |
The official notes
Read the 21w39a article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- Advancements
- New triggers
- Changed triggers
- Loot Tables
- New functions
- World Data: Chunk Format
- Resource Pack format
- Server bundling
Minecraft Wiki page for 21w39a.
In the journal
← 21w38a · All builds · 21w40a →
Sources
- misode/mcmeta — 21w39a summary — formats and registries, generated from the game’s own data.
- minecraft.net — 21w39a — section names only.