Pantheon release notes

Some customers have reported that emails generated from form plugins, such as Gravity Forms or Contact Form 7, have content truncated after upgrading their site to PHP 8. A fix has been applied to PHP 8.2 and above. Affected sites can resolve this issue by upgrading their PHP version to 8.2 or 8.3.

Important PHP version information

• PHP 8.0 reached End-of-Life on November 26, 2023.
• PHP 8.1 is now receiving security-only updates and will reach End-of-Life in December 2025.

For the best performance and security, Pantheon recommends running PHP 8.2 and above.

The New Relic PHP agent has been updated to the latest version, v11.2.0.15, for all eligible versions of PHP. Support for PHP 7.0 and 7.1 was removed in version 11.0, so the New Relic PHP agent for those versions remains at v10.22.0.12.

This update brings several enhancements and fixes compared to the previous version, including support for Drupal 11. Note, New Relic agent 11.2 introduces information collection for Composer packages, but this is not yet enabled on Pantheon.

For a detailed list of all changes and improvements, see the complete New Relic PHP agent changelog.

Learn how New Relic's real-time performance monitoring can help you with metrics and reports on your Pantheon web applications.

Pantheon has committed to provide security updates to Drupal 7 sites for at least 2 additional years beyond it's upcoming end of life date on January 5, 2025. Pantheon is partnering with Tag1 Consulting to offer Long-Term Support (LTS) for Drupal 7 at no additional cost through at least January 5, 2027.

To learn more about whats included in this offering, see related documentation.

Drupal 11 is now available as an option when creating a new Drupal site on Pantheon. Previously, in order to create a new Drupal 11 site you had to first create a Drupal 10 site and then manually upgrade to Drupal 11 via Composer.

See related documentation for how to create new CMS sites on Pantheon.

PHP 8.1.30, 8.2.24 and 8.3.12 were released on the platform. They contain the latest bug fixes and security updates for PHP.

As a reminder, PHP 8.0 reached End-of-Life and PHP 8.1 was moved to security-only updates on 26 November 2023. PHP 8.1 will reach End-of-Life in December 2025. For the best performance and security, Pantheon recommends running PHP 8.2 and above.

• PHP Supported Versions

With the Terminus 3.6.0 release, you can now rename site labels directly through Terminus using the new site:label:set command. Previously, updating a site's label required contacting Support.

A site on Pantheon has both a machine name and a human-readable label:

• Machine name (e.g., my-awesome-site): Used in Terminus commands, constructs platform domains, and cannot be changed after site creation.
• Human-readable label (e.g., My Awesome Site): Shown in the Pantheon workspace and site dashboards. This label can be changed after site creation via Terminus. For example:

Upgrade today to take advantage of this new command.

How to upgrade Terminus

If you manage your installation via Homebrew on macOS, you can update Terminus with the following command:

For other systems, see additional upgrade instructions here.

Additional updates in Terminus 3.6.0

Tracking of command success rates and execution time (#2623).

RSS readers will now detect multiple release notes from the same date.

Our release note publishing process runs through Markdown and Git with published dates set manually only at the granularity of year, month, and day. RSS readers (like our Community Slack integration) ignore multiple items with identical dates and times. We have worked around this limitation by setting an arbitrary hour, minute, and second for each release note within the RSS feed by deriving a hash of the note.

To reduce the pain of adding custom domains for our Diamond and Platinum customers, sites associated with Diamond and Platinum workspaces are now automatically exempt from domain verification enforcement. Exemption enables the option to skip domain verification when connecting custom domains in the site dashboard. Previously, this exemption had to be requested by contacting support.