Citus now fully uses the PostgreSQL extension APIs. This means Citus users can immediately benefit from new features in PostgreSQL, such as semi-structured data types (json, jsonb) and UPSERT. Also, users can keep working with their existing Postgres drivers and tools.
Additionally, this marks the first open-source Citus release! The project, codebase, and all open issues are now available on GitHub. We realized that when mentioned Citus and PostgreSQL together to prospective users, they already assumed that Citus was open. After many conversations with our customers, advisors, and board, we are happy to make Citus available for everyone.