Minecraft Java Edition 26.3-snapshot-1 Released

26.3-snapshot-1 is the first snapshot for Java Edition 26.3, released on June 23, 2026[1], which fixes several bugs.

New Content

Blocks

Poplar Sapling

• A new sapling dropped by Poplar trees.

Poplar Leaves

• Natural blocks that generate with Poplar trees.
• Come in three colors: red, orange, and yellow.

Poplar Log

• Natural blocks that generate with Poplar trees.
• Have corresponding stripped variants.
  • Can be crafted into corresponding hanging signs.

Poplar Wood

• Crafted from 4 Poplar Logs.
• Has corresponding stripped variants.

Poplar Planks

• A new type of plank.
• Can be used to craft corresponding buttons, doors, fences, fence gates, pressure plates, signs, slabs, stairs, trapdoors, boats, and boats with chests.

Shelf Mushroom

• Generates on the trunks of Poplar trees and fallen Poplar trees.
• Comes in small and large sizes.
• Using bone meal on a small Shelf Mushroom will grow it into a large Shelf Mushroom.
• Breaking a large Shelf Mushroom drops two Shelf Mushrooms.
• Can be used to craft mushroom stew.
• Can be obtained by trading with Wandering Traders.
• Has a certain elasticity, similar to beds.

Red Shrub

• Generates naturally in patches within Mottled Forests.
• Can be used for composting, with a 30% chance to increase the compost level by one.
• Using bone meal on it will generate new Red Shrubs in nearby valid positions.

Wool Stairs and Wool Slabs

• Stairs and slabs made from wool, available in all 16 colors.

World Generation

Mottled Forest

• A new forest biome that generates near cold biomes.

Abandoned Campsite

• A new structure that can generate in the following biomes:
  • Meadow
  • Cherry Grove
  • Forest
  • Birch Forest
  • Old Growth Birch Forest
  • Flower Forest
  • Windswept Forest
  • Mottled Forest
  • Taiga
  • Snowy Taiga
  • Old Growth Spruce Taiga
  • Old Growth Pine Taiga
  • Sparse Jungle
  • Bamboo Jungle
  • Swamp
  • Savanna
  • Badlands
  • Pale Garden
• Each biome has its own unique variant.
• Certain components of the structure are common across all biome variants.
• Chests with loot, copper chests, and barrels can be found.

General

Data Components

• Added the provides_pottery_pattern component.
  • Stores the pottery pattern carried by the item.
    • Format: A namespace ID of a pottery pattern.

Slot Sources

• Added the minecraft:reference slot source type.
  • Uses the referenced slot source.
  • Has the following field:
    • name: The namespace ID of the referenced slot source.

Loot Context

• Added command_slot_source.
  • container: The target container or inventory.
  • origin: The command execution coordinates.
  • this_entity: May provide the command executor entity.

Changes

Blocks

Spruce Leaves

• No longer produce falling leaf particles.

Items

Suspicious Stew and Mushroom Stew

• Changed the crafting recipe; they can now be crafted using any two mushrooms.

Command Format

/execute

• Added the slots conditional subcommand.
  • Detects whether a block or entity has slots matching the given slot source.
  • The slot source is parsed using the loot context minecraft:command_slot_source.
  • Syntax:
    • (if|unless) slots block <pos> <slot_source> -> _execute_
    • (if|unless) slots entity <targets> <slot_source> -> _execute_
• The items conditional subcommand now accepts a slot source.
  • The slot source is parsed using the loot context minecraft:command_slot_source.
  • Syntax:
    • (if|unless) items block <pos> <slot_source> <item_predicate> -> _execute_
    • (if|unless) items entity <targets> <slot_source> <item_predicate> -> _execute_

/give

• When the item count exceeds the limit, the command now returns an error instead of printing an error message and returning 0.

/item

• Parameters that previously accepted slots now accept slot sources.
  • These parameters will be parsed using the new loot context minecraft:command_slot_source.
  • Can reference a slot source or be specified inline.
  • Can use slot sources with multiple targets.
  • The replace subcommand now has new semantics:
    • Items in the target slots are replaced one by one by the source items, in the order specified by the slot source.
    • When there are more target slots than source items, excess slots are ignored.
      • For example, replacing slots [12345] with item (ABC) results in [ABC45].
    • When there are fewer target slots than source items, excess items are ignored.
      • For example, replacing slots [123] with item (ABCDE) results in [ABC].
  • String-based slot range notation <_槽位类型_> or <_槽位类型_>.<_槽位编号_> remains valid.
    • Can be a single slot, e.g., armor.chest.
    • Can be multiple slots, e.g., container.*.
    • This notation serves as a shorthand for using a slot source of type minecraft:slot_range with the given slot range.
      • For example, hotbar.4 and {type:"minecraft:slot_range",slots:"hotbar.4"} are identical.
• The item source entity parameter for from entity now accepts target selectors that select multiple entities.
  • When multiple entities are selected, slots from each entity will be concatenated.
• Added fill and override subcommands, with syntax identical to /item replace.
  • /item fill
    • Fills the target slots with source items.
    • When there are more target slots than source items, the source item sequence is repeated until all target slots are filled.
      • For example, replacing slots [12345] with item (ABC) results in [ABCAB].
  • /item override
    • Overwrites items in the target slots with source items.
    • When there are more target slots than source items, items in the excess slots are cleared.
      • For example, replacing slots [12345] with item (ABC) results in [ABC__], where _ represents an empty slot.

/team

• The /team join and /team leave subcommands now output the actual number of entities affected, excluding those whose teams remained unchanged.

/tellraw

• NBT components in text components are now parsed at most 64,000 times.

/tick

• The following subcommands now return an error on failure instead of printing an error message and returning 0.
  • /tick step
  • /tick step stop
  • /tick sprint stop

General

Data Packs

• Changed the data pack version to 108.0.
• Renamed registry configured_feature to feature.

Resource Packs

• Changed the resource pack version to 89.0.

Server Management Protocol

• Changed the server management protocol version to 3.1.0.
• Added the following notification methods, issued when the server performs a full world upgrade:
  • minecraft:notification/world/upgrade_started
  • minecraft:notification/world/upgrade_progress
  • minecraft:notification/world/upgrade_finished
  • minecraft:notification/world/upgrade_failed

Data Components

• minecraft:pot_decorations
  • Now accepts a compound tag with the following optional fields:
    • back
    • left
    • right
    • front

Armor Trim Definition Format

• Modified the format for armor trim materials:
  • The asset_name field has been replaced by palette.
    • Determines the palette texture ID to be used for the armor trim texture.
  • Removed the override_armor_assets field; its functionality is replaced by resource pack armor textures.

Goat Horn Instrument Definition Format

• Added the durability_damage field.
  • A non-negative integer that determines the durability consumed per use.
• The use_duration field can now be set to 0 to remove the usage cooldown.

Block Entities

• minecraft:decorated_pot
  • The sherds field now accepts a compound tag with the following optional fields:
    • back
    • left
    • right
    • front

Slot Sources

• Slot sources can now be defined in the slot_source folder of a data pack.
  • Can be used in commands that accept slot source parameters.
  • Can be used in inline slot source definitions using the minecraft:reference slot source type.
• The minecraft:contents slot source type can now select empty slots.
• Modified the minecraft:slot_range slot source type:
  • The source field now supports the value container, which retrieves a slot from a container or inventory in the loot context.
  • source is now optional.
    • The default value is container.

Configured Features

• Removed the config field; feature configuration fields are now defined directly within the root tag.

Noise Settings

• Renamed the surface_rule field to material_rule.

Fixes

Fixed 39 bugs.

Bugs from pre-releases of 26.3:

MC-4 — Item entities sometimes appear in the wrong location.

MC-73162 — Destroying entities that can be destroyed in one hit in Creative mode sometimes destroys the block behind them.

MC-91006 — Some entities lose their names after being placed or destroyed.

MC-102732 — Arrows may visually bounce off entities not wearing shields.

MC-113006 — Items hooked by fishing rods do not move smoothly, but rather teleport.

MC-122717 — Success messages for some commands include unaffected entities, contradicting the command result.

MC-151857 — The success message for /give affecting multiple players uses the wrong string.

MC-162159 — Riding a boat above a bubble column causes the player to move up by 2 blocks.

MC-168446 — Bone meal can be used on a single Dark Oak or Pale Oak sapling, even though they cannot grow.

MC-206356 — Movement of falling block entities is visually stuttery.

MC-222818 — TNT can be ignited in Adventure mode.

MC-223321 — Turtle eggs can be destroyed by landing or standing on them within the spawn protection area.

MC-223323 — Farmland can be trampled and degraded within the spawn protection area.

MC-264003 — Boats carrying players sometimes stop suddenly while sliding on ice.

MC-265584 — TNT may visually pass through blocks above it when located in a bubble column with Soul Sand directly below.

MC-276692 — Lingering potions landing on a target's head do not apply effects to the target.

MC-279395 — Floating trees may generate above abandoned portals.

MC-295756 — Pistons are desynced on the client side, causing players to be moved differently compared to other entities.

MC-297741 — Gravity-affected blocks in an upward bubble column may visually pass through blocks above them on the client.

MC-298431 — Slime block boat launching behavior is inconsistent.

MC-298762 — Phantoms bounce arrows fired from bows or crossbows.

MC-302221 — Moving entities bounce arrows.

MC-304594 — Spears can knock interaction entities off vehicles.

MC-305535 — Elytra can be activated by clicking the jump key while the player is in lava.

MC-307625 — The glowing effect of block display entities showing End Portals or End Gateways is invisible.

MC-307890 — Some textures of geyser particles use the wrong color in certain locations.

MC-307933 — Deep ores may replace the tuff of sulfur springs and generate on the surface.

MC-308008 — The success message for /tag reports more affected entities than actually affected.

MC-308009 — The success message for /scoreboard players enable reports more affected players than actually affected.

MC-308011 — The success message for /recipe reports more affected players than actually affected.

MC-308012 — The success message for /enchant reports more affected entities than actually affected.

MC-308013 — The success message for /effect reports more affected entities than actually affected.

MC-308254 — Dying to a Sulfur Monster that has absorbed a Magma Block does not increment the player's killed_by:sulfur_cube statistic.

MC-308314 — Custom player heads do not render textures correctly when inside a Sulfur Monster.

MC-308405 — /unpublish executes successfully even when the world is not open, despite outputting a failure message.

MC-308490 — "Normal" Sulfur Monster prototypes produce stone sounds, even though they no longer correspond to stone-type blocks.

MC-308789 — Pointed Dripstone or Sulfur Spikes can be destroyed with a trident in Adventure mode.

MC-308830 — Placing a bed to replace tall grass does not destroy the other part of the tall grass.

MC-30884