Postgres 16 introduces several performance improvements and developer experience enhancements, including expanded support for SQL/JSON syntax with the introduction of new functions such as JSON_ARRAY(), JSON_ARRAYAGG(), and IS JSON predicate. These features allow developers to construct and manipulate JSON data more efficiently and effectively, enabling them to build more robust and scalable applications. With Neon's support for Postgres 16, users can take advantage of these new capabilities and improve their development workflow, making it easier to work with JSON data in PostgreSQL.