Today, the Ember project is releasing version 3.13 of Ember.js, Ember Data, and Ember CLI.
Ember 3.13 is the final release of Ember before Octane. Ember 3.13 is also the Octane preview. The preview allows adventurous community members to start using its stable features and help put the final round of polish on supporting tools and documentation before Octane becomes official in 3.14. You can learn more about what to expect from Octane and how to prepare your apps in a previous blog post.
This is a companion discussion topic for the original entry at https://emberjs.com/blog/2019/09/25/ember-3-13-released.html