Pantheon Changelog
March 2018

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Platform Improvements

Terminus 1.8

If you haven’t updated Terminus recently, check out the Terminus Changelog to see what’s new and update to the current release.

PHP Security Upgrades

We’ve upgraded to PHP 5.6.35, 7.0.29, 7.1.16, and 7.2.4. See our documentation to learn how to upgrade your PHP version.

WordPress Core Upgrade

WordPress 4.9.5 has been pushed to all WordPress site dashboards.

Pantheon's update to WordPress 4.9.5 included a customization to the WordPress login form, which shows a button to "Return to Pantheon" to help with the first time user experience. Additional information is available here.

WordPress login with Pantheon button

Drupal Core Upgrades

Drupal 8.5.1 has been pushed to all Drupal 8 site dashboards. This release is classified as a security release and all users are urged to upgrade their sites as soon as possible.

Drupal 7.58 has been pushed to all Drupal 7 site dashboards. This release is classified as a security release and all users are urged to upgrade their sites as soon as possible.

Drupal 6.40 has been pushed to all Drupal 7 site dashboards. This release is classified as a security release and all users are urged to upgrade their sites as soon as possible.

Global CDN Surrogate-Key-Raw Disabled by Default

The Surrogate-Key-Raw header, used for debugging when using Pantheon Advanced Page Cache, is no longer sent by default. To receive this header when making a request, send the Pantheon-Debug: 1 header, like so:

curl -IsH "Pantheon-Debug:1" https://example.com | grep key

This change addressed an issue that caused Twitter card validation to fail, and also reduces overall page size and speeds up page load time when sending many keys.