Minecraft Preview — Windows test build

Minecraft Preview for Windows

Test upcoming Bedrock features in the separate Minecraft Preview app for Windows. Build, explore and try custom packs, but keep copies of experimental worlds: new blocks, systems and pack compatibility can change between builds.

Official game information ↗

From the publisher

Updates & announcements

October 13, 2026

Minecraft Beta & Preview - 26.70.20

Minecraft Preview 26.70.20 adds jukebox playlists and brittle ice, with Windows fixes for chunk reloads during window resizing and cached pack downloads. This is an experimental Preview release.

Preview update delivered

Experimental Preview/Beta, not the stable retail release.

Official announcements ↗

Your content route

Microsoft Learn / Minecraft Creator documentation

Bedrock Add-Ons use resource and behavior packs. Microsoft documents importing .mcpack/.mcworld files and activating packs in a world’s Resource packs or Behavior packs settings. Windows Preview has its own development folders, where creators can test pack contents without replacing the stable game’s content.

Built-in Bedrock pack system; no Java Forge or Fabric loader

Requirements

A pack compatible with the selected Preview version and any dependencies listed by its author
Only enable experimental APIs or toggles required by the pack; options differ between builds

Documented locations

%appdata%\Minecraft Bedrock Preview\users\shared\games\com.mojang\development_behavior_packs
%appdata%\Minecraft Bedrock Preview\users\shared\games\com.mojang\development_resource_packs

Use the documented location for the applicable edition.

Keep an untouched copy of the world before importing or enabling packs, and confirm that Windows opens content in Preview rather than the stable game. Test one compatible pack at a time in a copied world. Bedrock’s world editor can remove active packs; use the untouched copy if content changes need to be undone.

Preview worlds and pack APIs can break or change with later builds.
Experimental worlds cannot be converted back to a non-experimental state merely by disabling a toggle.
Removing a pack can remove its mobs or replace blocks; disabling a pack is not full save rollback.
General Bedrock activation screens are documented; Preview labels may vary. Exact pack compatibility with 26.70.20 must be checked separately.

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Know your edition

Game details

Edition scope

This is the separate Windows Preview application for testing Bedrock features. Its versions, worlds and content folders are distinct from stable Bedrock and Java Edition.

Windows PC Preview

Community context

The October Preview discussion includes enthusiasm for ice and music features alongside questions about add-on imports and Nether spawning. These are individual reactions to a test build, not a representative rating of Minecraft.

Community discussions reflect individual experiences and can change.

Sources & review

Reviewed October 17, 2026. Exact editions and mod requirements can differ across stores and branches.

This is an informational guide. Automatic mod-folder preparation and package installation are not enabled for this game in Heimdall Link.