Pantheon release notes

Pantheon has released a new version of our Native PHP Sessions plugin. This release updates documentation and a number of minor dependencies under the hood. Most notably, this update tests the plugin against PHP 8.4, increases the minimum PHP version to 7.4 and bumps the minimum supported WordPress version to 5.3. Additionally, to comply with WordPress plugin repository guidelines, we have removed "WordPress" from the plugin name.

Action required

You are encouraged to upgrade your version of Native PHP Sessions to the latest version as soon as you are able.

If you have issues with the plugin, please use the GitHub issue queue for the plugin.

New sites created on the platform now use PHP Runtime Generation 2.

PHP Runtime Generation 2 includes updated extensions, PHP 8.4 availability, and enhanced security features. This new PHP runtime will begin rolling out to existing sites on September 24.

Some PHP extensions and OS packages have not been ported over to Generation 2 yet, and may never be ported. Review the OS Packages and PHP Extensions documentation to review these changes. If your new sites depend on these, we recommend you downgrade to Generation 1 and contact your Customer Success Manager or create a support ticket to discuss your site needs.

Today, Pantheon's Content Publisher moves from Beta to Public Preview. In Beta, teams needed to request access to use Content Publisher. Now any team with a Google Workspace can sign up to use Content Publisher to publish to their website straight from Google Docs, with a free 30-day trial of our enterprise-level plan.

If you wish to use Content Publisher with your WordPress, Drupal, or Next.js sites, sign up here.

This promotion to Public Preview also reflects increased product maturity in areas like:

• Pricing information and free trial of enterprise-level features now publicly available.
• New releases for our Drupal module and WordPress plugin with bug fixes and feature improvements.
• Multiple Google Workspaces can now be connected to a single Content Publisher account.
• Content approval workflows that allow content editors to submit content to be approved and published by administrators.
• Live chat support now directly integrated within the Content Dashboard interface.

For more perspective on Content Publisher, check out the announcement blog post. See our documentation site for guidance on using Content Publisher.

Share feedback – We have a dedicated Slack channel for public preview participants where you can easily ask questions and discuss feedback with the Pantheon product and engineering team. To request an invite, submit this form.

Terminus 4.0.3 is now available. This small update contains the latest bug fixes and improvements for this tool.

Added

• Make site label available in site:list and org:site:list commands
• Add a debug log message to workflow:wait printing the workflow start time

Fixed

• Regression affecting SSH commands (e.g., drush, wp-cli) on sites using external version control
• Un-deprecated --tags parameter on org:site:list command
• Remove unnecessary api call from tag:add and tag:list causing unnecessary load and timeouts

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.

PHP versions 8.3.25 and 8.4.12, and are now available on the platform. These updates brings the latest bug fixes, improving performance and security for your sites. Updates will be applied automatically over the next few days, so no manual action is required.

PHP 8.4 is only available with the new PHP Runtime Generation 2. To upgrade your site, set the following in your pantheon.yml file:

The PHP 8.4 upgrade process automatically includes an upgrade to PHP Runtime Generation 2.

Important PHP version information

• PHP 8.1 and 8.2 are currently receiving security-only updates.
• For more details, see the full list of PHP supported versions.

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

Terminus 4.0.2 is now available. This small update contains the latest bug fixes and improvements for this tool.

Notable release details

• The workflow:wait command has been fixed
• The env:info command now outputs the PHP Runtime Generation

For more information about this release, visit the GitHub release page.

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.

Editorial notes:

• The date for this has been moved from September 10, 2025 to September 17, 2025.

Starting September 17, 2025, new sites created on the platform will use PHP Runtime Generation 2.

PHP Runtime Generation 2 includes updated extensions, the latest PHP version, and enhanced security features. This new PHP runtime is currently available in beta and will begin rolling out to existing sites on September 24.

Some PHP extensions and OS packages have not been ported over to Generation 2 yet, and may never be ported. Review the OS Packages and PHP Extensions documentation to review these changes. If your new sites depend on these, we recommend you downgrade to Generation 1 and contact your Customer Success Manager or create a support ticket to discuss your site needs.

ClamAV support is now operational with PHP Runtime Generation 2. This open source antivirus engine helps protect endpoints by scanning uploads to your sites once configured via a module/plugin.

PHP Runtime Generation 2 includes updated extensions, the latest PHP version, and enhanced security features. This new PHP runtime is currently available in beta and will begin rolling out on September 17. Early testing is recommended to ensure compatibility.