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Release Notes

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      Quicklinks

      Release 3.3 | Release 3.2 | Release 3.1 | Release 3.0 | Archived documentation

      Couchbase Sync Gateway
      This content describes the key features and changes implemented by release 4.0.0 of Couchbase Sync Gateway

      One Way Upgrade

      The migration to a 4.x configuration is a ONE WAY process — see: Upgrading for more.

      4.0.1 — November 2025

      Fixed Issues

      Enhancements

      Known Issues

      None for this release.

      Deprecations

      None for this release.

      For an overview of the latest features offered in Sync Gateway 4.0, see New in 4.0.

      4.0.0 — October 2025

      Fixed Issues

      Enhancements

      Known Issues

      Deprecations

      For an overview of the latest features offered in Sync Gateway 4.0.0, see New in 4.0.

      Upgrading

      For more on upgrading — see: Upgrading

      Related Content

      API Topics
      Reference
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