June 2021 Changelog
Drupal 9.1.8 is now available for production sites. Drupal 9 sites on Pantheon use Integrated Composer, enabling one-click core updates through the Dashboard. To check for available updates, click Check Now from the site Dashboard Dev tab.
WordPress 5.7.2 is now available on the Pantheon platform. This release fixes security vulnerabilities, and users are urged to upgrade their sites immediately. Detailed information on applying and debugging core updates can be found in the Core Updates documentation.
WP-CLI 2.5.0 is now available. This release fixes security vulnerabilities, and users are urged to upgrade. For more information, see the WP-CLI 2.5.0 release notes. Detailed information on using WP-CLI on the Pantheon Platform can be found in the WP-CLI documentation.
Upgrade from Drupal 8 to Drupal 9 with Integrated Composer - Convert a Drupal 8 site to a Drupal 9 site managed with Integrated Composer. If you have more questions about switching to Drupal 9, stop by our Thursday office hours.