Minecraft 26.4 Snapshots: What Paper Server Owners Should Test

If you run a Paper server, Minecraft 26.4 gives you changes to evaluate before planning your next update. Here is what the snapshots contain, which server settings deserve attention and what Paper has announced about its next configuration changes.

Check the release status before planning an update#

As of 8 November 2026, Minecraft Java Edition 26.4, called the Fourth Drop 2026, is an upcoming release planned for Q4 2026. The release page lists seven snapshots and no pre-release. That gives owners a development version to examine, without establishing a final release date.

Snapshot 7 was released on 3 November. Snapshots are development versions, so treat their current behavior and format numbers as test targets rather than a finished release specification.

Paper's published builds currently reach 26.3, with no 26.4 version group listed. Paper 26.3 build 244, dated 6 November, is marked STABLE. Paper is therefore still at the previous release for owners following its available builds.

Paper Free Minecraft server software with a stable 26.3 build and no published 26.4 version group as of 8 November 2026. On PaperMC

Test cold-biome changes against your server's gameplay#

The largest gameplay additions involve cold environments. The snapshot changes listed for 26.4 include Ice Caves beneath cold biomes, a Frostbite zombie variant and a Freezing status effect. These give survival owners several concrete interactions to evaluate.

• Ice Caves: Examine the packed ice and calcite terrain, including icicles and ice crystals, when assessing exploration and build opportunities.
• Frostbite encounters: Test both melee attacks and thrown ice balls. The mob appears in snowy biomes, burns in sunlight and can result from a zombie converting in powder snow.
• Freezing: Account for an effect that damages affected entities over time and slows movement when reviewing encounters.
• Ice Balls: Review the Frostbite's drop and its brewing use before deciding how it should fit your survival progression.

Snapshot 3 introduced the Ice Caves, Frostbite and Freezing additions. The following showcase covers that snapshot, so use it for those features rather than as a complete account of Snapshot 7.

Ice Caves! Icicles! Ice Crystals! New Mob! What's New in Minecraft 26.4 Snapshot 3? slicedlime

Include arenas and decorative builds in the review#

The changes are not limited to survival exploration. Snowballs knock players back in 26.4, making them worth testing wherever your own arena design relies on narrow paths or exposed platforms. A jukebox can also cycle through music discs in connected containers, which is relevant when planning music for a build.

Snapshot 7 adds calcite pillars, slabs, stairs and walls, polished calcite, polished calcite bricks, chiseled soulshale and the music disc flurry. Builders can evaluate those materials now, while keeping their use separate from any decision to update the live server.

Review the added connection settings#

Snapshot 1 introduced three dedicated-server properties worth putting on your compatibility checklist:

For allowed-connection-ids, the connection ID is the text before the first @ in the server address entered by the player. A useful test is to compare a listed ID with an unlisted one and record which connections are accepted.

Keep that test focused on the property's documented connection filtering. For your broader access controls, retain a separate security review rather than treating this setting as a complete server security plan.

Match Java and packs to the exact snapshot#

Snapshot 7 requires Java SE 25. Its listed data pack format is 126.0, and its resource pack format is 102.0.

Those numbers have already changed during development. Snapshot 3 listed data pack format 123.0 and resource pack format 100.0. A pack evaluation should therefore identify the exact snapshot being tested, rather than reporting only that it works on 26.4.

• Record the snapshot number beside each pack test result.
• Check the recipes, functions and other pack behavior your server actually uses.
• Include command-driven content in the review: Snapshot 7 lets /effect accept mob effect tags.

Prepare for Paper's planned config merge#

Paper's 26.3 announcement says it is preparing a configuration merge for the next major release, 26.4. The linked configuration merge tracker describes work in progress, not a shipped migration.

The plan moves options from bukkit.yml and spigot.yml into paper-global.yml, paper-world-defaults.yml or paper-world.yml. server.properties remains separate.

• Some options are planned to use ON, OFF and DEFAULT states.
• Spawn limits are planned to become per-world settings.
• Autosaving is planned to split into server/player settings and chunk settings.
• The plan removes /spigot reload.

For now, identify which settings your server customizes and why. Do not rewrite working configurations around an unfinished plan. When Paper 26.4 becomes available, compare its actual migration behavior with that inventory.

Separate snapshot findings from your live update decision#

Use snapshot evaluation to answer three questions: which gameplay changes matter to your players, which packs need attention and which future configuration changes affect your operating notes. Keep plugin compatibility as a separate decision until a relevant Paper build is available.

Our Paper update walkthrough covers planning a move between releases. The backup and restore guide helps establish the recovery plan that belongs alongside it.

Paper's current update documentation calls for backups of worlds, server configurations, plugin configurations and plugin jars. Its 26.3 announcement also explicitly warns that a world upgraded to 26.3 cannot return to a lower version. Keep that warning in mind when assessing 26.3 independently of the ongoing 26.4 snapshots.