With this release we fix a bug that might occur when using composer to update the AMP module dependencies and a drush import-config issue.
The media edit pages get to look a lot nicer and the content moderation integration was tweaked a bit.
This is a hotfix release for a regression affecting some Drush installations that was introduced by the fix for SA-CORE-2019-002. No other fixes are included.
Sites on 8.5.x or earlier should update immediately to Drupal 8.5.10 instead, and plan to update to the latest 8.6.x release before May 2019.
If you continue to experience issues with Drush following this update, try the following: