A Drupal Core and Acquia Lightning update are taking place on Saturday May 23rd. Please refrain from editing your sites on May 23rd. This changelog also includes updates to the article content type, article previews, custom alerts, the CNAS theme, and the feed module.
Drupal's sprint release for July 2019 includes an overhaul of the Article Content Type, allowing for various articles. It introduces a workflow for custom blocks and most content types. A no-stripe table is an option and excess padding on titles has been removed.