The Ember.js team has released the final iteration of the 1.x series, as well as their first 2.0 beta. The 1.13 release brings with it the Glimmer rendering engine, marking the third overhaul of Ember's 1.x rendering layer, and "dramatically improving re-render performance in many common scenarios," where previous iterations relied "on granular observation for efficiency."
Ember.js users have voted overwhelmingly in favour of dropping support for Internet Explorer 8. Ember co-creator Tom Dale said "the vast majority of Ember users" were "comfortable" with giving up IE8 support in Ember 2.0. Dale went on to say that while there was also "enormous support for dropping IE9 support as well" the benefits were not "as strong".
Ember.js has released version 1.9, bringing with it support for Handlebars 2.0, as well as performance improvements, and the introduction of HTMLBars into the Ember 1.10 beta.
Ember 1.8 has been announced. One of the biggest changes is use of metal-views, which improves rendering performance as well as paves the way for more rendering improvements, grouped as "HTMLBars" in the future.
The Ember.js team has released version 1.5, with new testing features, and an eager URL update that will “provide for a better UX 99% of the time,” according to Ember core team member Robert Jackson. Jackson, posting on the Ember.js blog, described the new version as having “a ton of bug fixes and small improvements” as well as new features in the release.