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New in 3.3

    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