August 1, 2021
Drupal 9.2.2 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.
Drupal 9.2.x will receive security coverage until June 15, 2022. Sites on 9.1.x or earlier should update to Drupal 9.1.11.