March 2021 Changelog
Create and launch Drupal 9 sites on Pantheon with Integrated Composer. Keep your Drupal 9 repository lean, avoid build artifacts on the main branch, and keep the one-click updates for both upstream commits & Composer dependencies that you have come to know and love with Pantheon.
WordPress 5.6.1 is now available on the Pantheon platform. Detailed information on applying and debugging core updates can be found in the Core Updates documentation. For more information, see the WordPress 5.6.1 release notes.