This release of Ember.js integrates the new Glimmer rendering engine and stabilizes a year of work by contributors. It is a backwards compatible drop-in upgrade that should also yield a significant performance bump for many use-cases.<p>Additionally it unblocks other feature work Ember has coming down the pipeline!<p>For those who haven't been keeping up with Ember or the Glimmer effort, I wrote a list of five things you should know about this release: <a href="http://madhatted.com/2016/11/30/5-things-to-know-about-ember-2-10-and-glimmer-2" rel="nofollow">http://madhatted.com/2016/11/30/5-things-to-know-about-ember...</a> It should be approachable even if you don't know the framework well.<p>Congrats to all the contributors for making such a difficult change so easy for everyone else to use!