Today the Ember project is releasing version 3.15 of Ember.js, Ember Data, and Ember CLI. In addition to brining new features and bug fixes, Ember 3.15 also marks the official release of the Octane edition, which is Ember's first edition release.
This is a companion discussion topic for the original entry at https://emberjs.com/blog/2019/12/20/ember-3-15-released.html