The release of Couchbase Lite 2.0 introduces significant updates, particularly the new Couchbase Lite Query Interface, which is based on N1QL, a SQL extension for JSON data. This interface provides a more streamlined and powerful approach compared to earlier versions, eliminating the need for creating views and map functions. Users can now create indexes and construct queries using a simplified Query Builder interface, which supports a range of operations such as fetching documents, pagination, and filtering through expressions. The interface supports various features, including complex filtering through logical expressions, pattern matching, string manipulation, and parameterization, allowing for efficient data querying across iOS, Android, and Windows platforms. The post provides examples, primarily using Swift for iOS, to illustrate these capabilities and offers guidance on transitioning from older Couchbase Mobile versions. Additionally, it invites users to explore related posts on advanced query capabilities like Full Text Search, array collections, and JOIN queries for a comprehensive understanding of the new functionalities.