Couchbase 4.1 has been released, offering significant updates such as comprehensive SQL CRUD support with N1QL for batch and OLTP applications, as well as covering indexes and prepared statements. The release supports additional platforms and introduces a Docker setup for easy deployment using a pre-configured Docker container, which can be started with a simple docker-compose command. This setup allows users to configure the server using Couchbase's REST API, set memory and index quotas, and install a sample bucket for testing purposes. Users can access the Couchbase query tool through a command line interface connected to the server and can easily stop and remove the container as needed. For further information on the new features and enhancements, users are encouraged to consult the official Couchbase Server 4.1 documentation and participate in community forums for additional support.