The Memcached Cloud Plugin for WordPress has been released, implementing the WordPress Object Cache based on the PECL Memcached extension and libmemcached library. The plugin offers advanced features such as multi set and get methods, 'by key' functions, and SASL authentication mechanism for secured connections to Memcached servers. To simplify the installation process for users deployed in untrusted networks or requiring more control over clients connecting, the plugin allows configuration of buckets with SASL effortlessly. The plugin is designed to work seamlessly with Heroku's PHP environment, supporting third-party extensions like Memcached through composer.json file. By following a step-by-step guide, WordPress users can deploy their application to Heroku and utilize Memcached Cloud for enhanced performance.