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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.

      4.0.0 — 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

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