26.4 Snapshot 2 — release journal
What 26.4-snapshot-2 changed for data packs, measured against 26.4-snapshot-1, the build before it. Released 2026-09-29; development build — not a release.
⚠ Breaking for data packs
This build removed 1 registry. Any file that referenced them stops loading. rule_test looks renamed to rule_test_type (100% of its entries reappear there) — in those cases the fix is likely moving files, not rewriting them.
Formats
| 26.4-snapshot-1 | 26.4-snapshot-2 | |
|---|---|---|
| Data pack format | 122.0 | 122.1 moved |
| Resource pack format | 98.0 | 99.0 moved |
| Data version | 5119 | 5120 |
Registries
13 entries added and 10 removed across 5 registries.
| Registry | Change | Added | Removed |
|---|---|---|---|
rule_test | registry removed — likely renamed to rule_test_type | — | all_of, always_true, any_of, block_match, blockstate_match, height_match, not, random_block_match, random_blockstate_match, tag_match |
rule_test_type | new registry | all_of, always_true, any_of, block_match, blockstate_match, height_match, not, random_block_match, random_blockstate_match, tag_match | — |
block_predicate_type | changed | below_heightmap | — |
environment_attribute | changed | visual/has_sky_occluder | — |
sound_event | changed | entity.zombie_nautilus.riding | — |
The official notes
Read the 26.4 Snapshot 2 article on minecraft.net.
That article's technical changes are grouped under these headings — open it for the detail:
- Data Pack Version 122.1
- New Environment Attributes
- Predicates
- Resource Pack Version 99.0
- Shaders & Post-process Effects
In the journal
← 26.4-snapshot-1 · All builds · 26.4-snapshot-3 →
Sources
- misode/mcmeta — 26.4-snapshot-2 summary — formats and registries, generated from the game’s own data.
- minecraft.net — 26.4 Snapshot 2 — section names only.