21w15a — release journal

What 21w15a changed for data packs, measured against 21w14a, the build before it. Released 2021-04-14; development build — not a release.

⚠ Entries removed

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

Formats

	21w14a	21w15a
Data pack format	7.0	7.0
Resource pack format	7.0	7.0
Data version	2706	2709

Registries

89 entries added and 17 removed across 17 registries.

Registry	Change	Added	Removed
`activity`	changed	`ram`	—
`advancement`	changed	`recipes/building_blocks/raw_copper_block`, `recipes/building_blocks/raw_gold_block`, `recipes/building_blocks/raw_iron_block`, `recipes/misc/gold_ingot_from_blasting_nether_gold_ore`, `recipes/misc/gold_ingot_from_smelting_nether_gold_ore`, `recipes/misc/raw_copper`, `recipes/misc/raw_gold`, `recipes/misc/raw_iron`	—
`block`	changed	`raw_copper_block`, `raw_gold_block`, `raw_iron_block`	—
`block_definition`	changed	`raw_copper_block`, `raw_gold_block`, `raw_iron_block`	—
`entity_type`	changed	`marker`	—
`height_provider_type`	changed	`trapezoid`, `very_biased_to_bottom`	—
`int_provider_type`	changed	`biased_to_bottom`, `clamped`	—
`item`	changed	`raw_copper_block`, `raw_gold_block`, `raw_iron_block`	—
`loot_table`	changed	`blocks/raw_copper_block`, `blocks/raw_gold_block`, `blocks/raw_iron_block`	—
`memory_module_type`	changed	`ram_cooldown_ticks`, `ram_target`	—
`model`	changed	`block/raw_copper_block`, `block/raw_gold_block`, `block/raw_iron_block`, `item/raw_copper_block`, `item/raw_gold_block`, `item/raw_iron_block`	—
`recipe`	changed	`gold_ingot_from_blasting_nether_gold_ore`, `gold_ingot_from_smelting_nether_gold_ore`, `raw_copper`, `raw_copper_block`, `raw_gold`, `raw_gold_block`, `raw_iron`, `raw_iron_block`	—
`sound_event`	changed	`entity.goat.eat`, `entity.goat.long_jump`, `entity.goat.ram_impact`, `entity.goat.screaming.eat`, `entity.goat.screaming.long_jump`, `entity.goat.screaming.prepare_ram`, `entity.goat.screaming.ram_impact`, `item.bone_meal.use`	`entity.goat.screaming.ram`
`texture`	changed	`block/raw_copper_block`, `block/raw_gold_block`, `block/raw_iron_block`	—
`worldgen/configured_carver`	changed	`prototype_canyon`, `prototype_cave`, `prototype_crack`, `prototype_ocean_cave`, `underwater_canyon`, `underwater_cave`	`crack`
`worldgen/configured_feature`	changed	`fossil`, `ore_coal`, `ore_iron`, `prototype_fossil_lower`, `prototype_fossil_upper`, `prototype_glow_lichen`, `prototype_ore_andesite`, `prototype_ore_coal_lower`, `prototype_ore_coal_upper`, `prototype_ore_copper`, `prototype_ore_diamond`, `prototype_ore_diamond_large`, `prototype_ore_diorite`, `prototype_ore_dirt`, `prototype_ore_emerald`, `prototype_ore_gold`, `prototype_ore_granite`, `prototype_ore_gravel`, `prototype_ore_infested`, `prototype_ore_iron_lower`, `prototype_ore_iron_middle`, `prototype_ore_iron_upper`, `prototype_ore_lapis`, `prototype_ore_lapis_buried`, `prototype_ore_redstone`, `prototype_ore_redstone_lower`, `prototype_ore_tuff`, `prototype_spring_water`, `prototype_underwater_magma`, `prototype_vines`	`fossil_lower`, `fossil_upper`, `ore_coal_lower`, `ore_coal_upper`, `ore_diamond_large`, `ore_iron_lower`, `ore_iron_middle`, `ore_iron_upper`, `ore_lapis_buried`, `ore_redstone_lower`, `underwater_magma`
`worldgen/decorator`	changed	—	`depth_average`, `glowstone`, `range_biased_to_bottom`, `range_very_biased_to_bottom`

The official notes

Read the 21w15a article on minecraft.net.

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

Markers
/debug function
Chat component separators
Custom server resource packs

Minecraft Wiki page for 21w15a.

In the journal

← 21w14a · All builds · 21w16a →

Sources

misode/mcmeta — 21w15a summary — formats and registries, generated from the game’s own data.
minecraft.net — 21w15a — section names only.