Today the Ember project is releasing version 3.9 of Ember.js, Ember Data, and Ember CLI. This release kicks off the 3.10 beta cycle for all sub-projects. We encourage our community (especially addon authors) to help test these beta builds and report any bugs before they are published as a final release in six weeks' time. The ember-try addon is a great way to continuously test your projects against the latest Ember releases.
This is a companion discussion topic for the original entry at https://emberjs.com/blog/2019/04/10/ember-3-9-released.html