Pantheon release notes

Updated to PHP 7.3.22 and 7.4.10 platform-wide. For information on upgrading between major PHP versions see Upgrade PHP Versions.

Drupal 9 is available for early access testing with new or existing sites. Now we’ve made that even easier, with a new Terminus Drupal 9 Multidev script.

Note: Drupal 9 is not yet ready for production use on Pantheon.

Drupal 8.9.6 is now available on the Pantheon platform. This release fixes security vulnerabilities, and sites are urged to upgrade immediately. Detailed information on applying and debugging core updates can be found in the Core Updates documentation. For more information, see the Drupal 8.9.6 release notes.

Drupal 8.8.10 is now available on the Pantheon platform. This release fixes security vulnerabilities, and sites are urged to upgrade immediately. Detailed information on applying and debugging core updates can be found in the Core Updates documentation. For more information, see the Drupal 8.8.10 release notes.

Drupal 7.73 is now available on the Pantheon platform. This release fixes security vulnerabilities, and sites are urged to upgrade immediately. Detailed information on applying and debugging core updates can be found in the Core Updates documentation. For more information, see the Drupal 7.73 release notes.

Terminus Command Reference - Each command now has its own page with more detail and examples.

Across the Pantheon Documentation site, all headers are now anchor links, to make finding, sharing, and re-referencing Pantheon documentation easier.

WordPress 5.5 has been released on the Pantheon platform. This version of WordPress introduces a new method, wp_get_environment_type(), which returns whether your site is running on a live, test or development environment. Pantheon supports this method, so it will return the correct value on any site that has upgraded to WordPress 5.5.

Drupal 9 is available for early access testing with new or existing sites. We don't recommend fully switching a live site to Drupal 9 until we have upgraded our version of MariaDB.