Pantheon Changelog

February 2022 Changelog

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Platform Improvements

Drupal 9.3.3

Drupal 9.3.3 is available for production sites and includes backwards-compatible improvements. Drupal 9.3 was released in December 2021. From Drupal 9.3, PHP version 8.0 or higher is recommended; PHP 7.3 and higher remains supported. 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 9.2.11

Drupal 9.2.11 is available and includes backwards-compatible improvements. This is a minor version (feature release) of Drupal 9 and is available for use on production sites.

WordPress 5.9

WordPress 5.9 is available for production sites and includes full site editing and the first default block theme. WordPress 5.9 comes installed with the Twenty Twenty-Two theme.

New and Updated Features

Email Preferences in the New Dashboard

You can now customize the marketing communication you receive from Pantheon in the New Dashboard. From the New Dashboard, click the gravatar to access Personal Settings. Click Notifications and Manage Preferences under Emails from Pantheon, to update your email preferences.


Support Guide - Support details for Pantheon products and features are now available in a structured and detailed guide. You can learn about Pantheon’s Scope of Support, ways to contact Support, our Early Access program, and more. Refer to the documentation for more information.