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New in 3.3

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      Couchbase Lite 3.0 introduces some breaking changes.
      If you’re upgrading from 2.x, refer to the appropriate upgrade page — see: Upgrading.
      You should be able to upgrade from 3.2.x to 3.3.x without manual intervention.

      Release 3.3.2 (February 2026)

      Couchbase Lite Release 3.3.2 introduces fixes and enhancements for:

      Release 3.3.1 (December 2025)

      Couchbase Lite Release 3.3.1 introduces fixes and enhancements for:

      Release 3.3.0 (October 2025)

      New Features

      Multipeer Replicator

      Couchbase Lite 3.3.0 introduces the new Multipeer Replicator API for bidirectional peer-to-peer synchronization in both Swift and Kotlin platforms. This replicator enables secure, direct synchronization between devices without the need for a centralized Sync Gateway.

      The Multipeer Replicator supports:

      • Peer discovery using DNS-SD (Bonjour) over a shared Wi-Fi network

      • Encrypted TLS connections with certificate-based authentication

      • Automatic mesh formation and replication routing between peers

      • Real-time updates using continuous, push-and-pull replication

      Each device advertises itself using a shared group ID, discovers others, and forms an optimized mesh network for efficient data sync. Multipeer Replicator performs authentication using client/server certificates, and applications can configure custom filters, conflict resolvers, and listeners for fine-grained control.

      For more information about Multipeer Replicator, see:

      This feature supports only continuous, push-and-pull replication. Version 3.3.0 disables Delta Sync by default.

      See also

      Couchbase Lite Release Notes

      Vector Search Release Notes

      Upgrading