Datapack Codex

26.1 Pre-Release 3 — release journal

What 26.1-pre-3 changed for data packs, measured against 26.1-pre-2, the build before it. Released 2026-03-17; development build — not a release.

⚠ Entries removed

8 registry entries were removed. A pack that names one of them will fail to parse where it does.

Formats

26.1-pre-226.1-pre-3
Data pack format101.0101.1 moved
Resource pack format84.084.0
Data version47814782

Registries

1 entries added and 8 removed across 2 registries.

RegistryChangeAddedRemoved
experiment/trade_rebalance/villager_tradechanged—librarian/4/emerald_and_book_desert_enchanted_book, librarian/4/emerald_and_book_jungle_enchanted_book, librarian/4/emerald_and_book_plains_enchanted_book, librarian/4/emerald_and_book_savanna_enchanted_book, librarian/4/emerald_and_book_snow_enchanted_book, librarian/4/emerald_and_book_swamp_enchanted_book, librarian/4/emerald_and_book_taiga_enchanted_book
villager_tradechangedfletcher/1/gravel_and_emerald_flintfletcher/1/gravel_and_emerald_arrow

The official notes

Read the 26.1 Pre-Release 3 article on minecraft.net.

That article's technical changes are grouped under these headings — open it for the detail:

Minecraft Wiki page for 26.1-pre-3.

In the journal

← 26.1-pre-2 · All builds · 26.1-rc-1 →

Sources