Jul 8, 09:55 PDT
Resolved – Drupal.org has released version 8.1.5. This release is classified as a bugfix release. Pantheon has made the update available for one-click update in site dashboards. Instructions for applying core updates can be found in our Support Center. Note that, other than the version number, this release is identical to Drupal 8.1.4, which was not released on Pantheon.
 – https://www.drupal.org/project/drupal/releases/8.1.5
 – http://helpdesk.getpantheon.com/customer/portal/articles/361248