PostgREST version 9 has been released with several new features, including resource embedding with inner joins, functions with unnamed parameters, and improved PostgreSQL 14 compatibility. With these updates, developers can now create more complex APIs and handle webhooks with ease, making it easier to integrate their database with external services. The release also includes support for Partitioned Tables, improved documentation, and bug fixes, further enhancing the capabilities of PostgREST as a tool for turning PostgreSQL databases into RESTful APIs.