Minecraft Java Snapshot 26.4 Snapshot 5 adds a buildable packed ice brick set, a new Frostbite advancement and ambient sounds for ice blocks. A separate Bedrock Preview, version 26.70.21, carries the packed ice building set into Bedrock testing. Both are unfinished preview builds, so players should back up worlds before loading them.
What Minecraft Snapshot 5 adds
Mojang's Java Snapshot 26.4 Snapshot 5 changelog introduces packed ice bricks as its headline feature. Players can craft them from a 2 by 2 arrangement of packed ice. The set also has slabs, stairs, walls and a chiseled variant, giving builders more ways to use the icy block in roofs, paths and exterior details.
The stonecutter works with the slab, stair, wall and chiseled versions. That makes it easier to use packed ice for a detailed build without crafting every shape at a table. The changelog also notes that packed ice bricks and chiseled packed ice belong to the Fast Sliding Sulfur Cube archetype, a technical behavior detail that may matter to players experimenting with moving blocks and custom builds.
The new advancement, “What Goes Around Comes Around,” is earned by killing a Frostbite with an Ice Ball. That gives the update a small combat objective alongside the building additions. The snapshot also changes how certain mobs can break blocks with projectiles in Adventure mode worlds, subject to the mob_griefing gamerule.
The update is also in Bedrock Preview
Bedrock players have a separate test build to install. Preview 26.70.21 describes the packed ice bricks and their variants, and adds further Bedrock-specific changelog items. Java Snapshot 26.4 Snapshot 5 and Bedrock Preview 26.70.21 are separate downloads and should not be treated as one shared version number.
The Bedrock preview page also lists changes to entity projectile components for format version 1.26.70 and later. Those are aimed at creators working with custom entities. For most players, the visible part of this preview is the new block set and its frozen-world atmosphere.
Neither page announces a stable release date for these features. Snapshot and Preview content can change before it reaches a normal game update, and the two editions do not always receive every experiment at the same time. If you are deciding whether to install a test build, check the correct changelog for your edition first.
How to try the Java snapshot safely
Minecraft's Java instructions say to open the Launcher and enable snapshots from the Installations tab. Snapshots can corrupt worlds, so Mojang recommends backing up a world or using a separate folder. A test installation is a safer place to try the new blocks than a world that matters to you.
The Bedrock Preview has its own installation and availability rules. Use the instructions on the official Preview page for the device you play on. Do not assume that a Java snapshot can be joined by a regular Bedrock installation, or that a Preview world will behave exactly like a stable world.
This distinction also matters for multiplayer. If friends are on the regular release, a world opened in a snapshot may not be compatible with their installation. Keep a separate copy for testing and leave the original world on the stable version until you are comfortable with the risks.
Why the packed ice set is useful to builders
Packed ice is already a distinct material in Minecraft builds, but a brick family gives it more architectural shapes. Slabs can make thinner floors and roof edges, stairs support angled paths, and walls help carry a continuous outline around a structure. Chiseled blocks add a patterned option for accents. Since the stonecutter can produce these variants, it can also reduce wasted materials when you are shaping a build.
There is a practical limit: ice blocks can behave differently from ordinary stone, especially around movement and melting mechanics. The snapshot changelog calls out the block archetype and craft methods, but players should test how the blocks interact with their own build before relying on them in a survival base or redstone setup.
The ambient sound change is conditional. Regular ice may make a sound when surrounded by at least eight ice blocks in the horizontal directions, with air above and water below. It is a small environmental detail that rewards a particular arrangement rather than a new sound that plays everywhere.
What to expect next
Mojang has presented these builds as testing versions for an upcoming game drop. The official notes do not promise that every listed change will ship unchanged, and they do not provide a stable release date. Players can try the current test versions now, report problems through Minecraft's official feedback channels and wait for later changelogs to confirm what stays.
If you are mainly interested in building, packed ice bricks are the clearest reason to load the snapshot. If you prefer stable worlds, there is no need to move a save just to preview the update. The new blocks are still being tested, and regular Minecraft remains separate from these preview builds.
Frequently asked questions
What is new in Minecraft 26.4 Snapshot 5?
It adds packed ice bricks and their slab, stair, wall and chiseled forms, a Frostbite advancement and ambient ice sounds.
Is Minecraft Snapshot 26.4 a stable update?
No. It is a Java testing snapshot. Bedrock has its own Preview build, and neither changelog gives a stable release date.
How do I install Minecraft Java Snapshot 26.4?
Open Minecraft Launcher, enable snapshots in the Installations tab and use a separate test world or backed-up copy.
Can a Minecraft snapshot damage my world?
Yes. Mojang warns that testing versions can corrupt worlds, so back up your save or use a different folder.
