1.21.4 Pre-Release 2 — release journal

What 1.21.4-pre2 changed for data packs, measured against 1.21.4-pre1, the build before it. Released 2024-11-25; development build — not a release.

📌 Additive

3,989 entries added and nothing removed. Existing packs keep their references; new content is available.

Formats

	1.21.4-pre1	1.21.4-pre2
Data pack format	60.0	61.0 moved
Resource pack format	46.0	46.0
Data version	4179	4182

Registries

3,989 entries added and 0 removed across 3 registries.

Registry	Change	Added	Removed
`lang`	new registry	`af_za`, `ar_sa`, `ast_es`, `az_az`, `ba_ru`, `bar`, `be_by`, `be_latn`, `bg_bg`, `br_fr`, `brb`, `bs_ba`, `ca_es`, `cs_cz`, `cy_gb`, `da_dk`, `de_at`, `de_ch`, `de_de`, `el_gr`, `en_au`, `en_ca`, `en_gb`, `en_nz`, `en_pt`, `en_ud`, `en_us`, `enp`, `enws`, `eo_uy`, `es_ar`, `es_cl`, `es_ec`, `es_es`, `es_mx`, `es_uy`, `es_ve`, `esan`, `et_ee`, `eu_es`, `fa_ir`, `fi_fi`, `fil_ph`, `fo_fo`, `fr_ca`, `fr_fr`, `fra_de`, `fur_it`, `fy_nl`, `ga_ie`, `gd_gb`, `gl_es`, `haw_us`, `he_il`, `hi_in`, `hn_no`, `hr_hr`, `hu_hu`, `hy_am`, `id_id` and 72 more	—
`resourcepack`	new registry	`high_contrast`, `programmer_art`	—
`sound`	new registry	`ambient/cave/cave1`, `ambient/cave/cave10`, `ambient/cave/cave11`, `ambient/cave/cave12`, `ambient/cave/cave13`, `ambient/cave/cave14`, `ambient/cave/cave15`, `ambient/cave/cave16`, `ambient/cave/cave17`, `ambient/cave/cave18`, `ambient/cave/cave19`, `ambient/cave/cave2`, `ambient/cave/cave20`, `ambient/cave/cave21`, `ambient/cave/cave22`, `ambient/cave/cave23`, `ambient/cave/cave3`, `ambient/cave/cave4`, `ambient/cave/cave5`, `ambient/cave/cave6`, `ambient/cave/cave7`, `ambient/cave/cave8`, `ambient/cave/cave9`, `ambient/nether/basalt_deltas/active1`, `ambient/nether/basalt_deltas/active2`, `ambient/nether/basalt_deltas/active3`, `ambient/nether/basalt_deltas/active4`, `ambient/nether/basalt_deltas/ambience`, `ambient/nether/basalt_deltas/basaltground1`, `ambient/nether/basalt_deltas/basaltground2`, `ambient/nether/basalt_deltas/basaltground3`, `ambient/nether/basalt_deltas/basaltground4`, `ambient/nether/basalt_deltas/click1`, `ambient/nether/basalt_deltas/click2`, `ambient/nether/basalt_deltas/click3`, `ambient/nether/basalt_deltas/click4`, `ambient/nether/basalt_deltas/click5`, `ambient/nether/basalt_deltas/click6`, `ambient/nether/basalt_deltas/click7`, `ambient/nether/basalt_deltas/click8`, `ambient/nether/basalt_deltas/debris1`, `ambient/nether/basalt_deltas/debris2`, `ambient/nether/basalt_deltas/debris3`, `ambient/nether/basalt_deltas/heavy_click1`, `ambient/nether/basalt_deltas/heavy_click2`, `ambient/nether/basalt_deltas/long_debris1`, `ambient/nether/basalt_deltas/long_debris2`, `ambient/nether/basalt_deltas/plode1`, `ambient/nether/basalt_deltas/plode2`, `ambient/nether/basalt_deltas/plode3`, `ambient/nether/basalt_deltas/twist1`, `ambient/nether/basalt_deltas/twist2`, `ambient/nether/basalt_deltas/twist3`, `ambient/nether/basalt_deltas/twist4`, `ambient/nether/crimson_forest/addition1`, `ambient/nether/crimson_forest/addition2`, `ambient/nether/crimson_forest/addition3`, `ambient/nether/crimson_forest/ambience`, `ambient/nether/crimson_forest/mood1`, `ambient/nether/crimson_forest/mood2` and 3,795 more	—

The official notes

Read the 1.21.4 Pre-Release 2 article on minecraft.net.

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

Data Pack Version 61
Furnace, Smoker and Blast Furnace Data

Minecraft Wiki page for 1.21.4-pre2.

In the journal

← 1.21.4-pre1 · All builds · 1.21.4-pre3 →

Sources

misode/mcmeta — 1.21.4-pre2 summary — formats and registries, generated from the game’s own data.
minecraft.net — 1.21.4 Pre-Release 2 — section names only.