Every six months, Drupal releases a new version.

Drupal 8.6 is not ready yet and is scheduled for release on September 5.

However, we already know what features will be in the final version. A Release Candidate is now available and at this point, the core is frozen and no new features will be added. 

So, now is a great time to dive in and discover what new features we'll see. Some of these features are outstanding!