Ember.js 2.7 和 2.8 beta 发布了。Ember.js 2.7是Ember的次要版本，更新了向后兼容；Ember.js 2.8测试版也在今日发布，这个分支将在大约6个星期后发布稳定版，之后将成为下一个LTS版本。
Ember.js 2.7 引入了一种新的向后兼容的 API：
#13764 [BUGFIX] Keep rest positional parameters when nesting contextual components if needed.
#13781 [BUGFIX] Fix NoneLocation#getURL
#13797 [BUGFIX] Ensure didInitAttrs deprecation is stripped in prod.
#13768 [BUGFIX] Update route-recognizer to v0.2.0. This addresses a large number of per-existing bugs related to URL encoding. However, in doing so, it might inevitably break existing workarounds in this area. Please refer to the linked pull request for more details.
#13634 [BUGFIX] Fix issues with rerendering blockless and tagless components.
#13605 [BUGFIX] Ensure
pauseTest runs after other async helpers.
#13655 [BUGFIX] Make debugging
this._super much easier (remove manual
#13672 [BUGFIX] Fix issue with
this.disconnectOutlet in routes.
#13716 [BUGFIX] Ensure that
Ember.Test.waiters allows access to configured test waiters.
#13273 [BUGFIX] Fix a number of query param related issues reported.
#13599 [FEATURE] Enable
Ember.js 2.8 测试版引入了以下新的后向兼容的 API：
Ember.Engine class - The base class for
Ember.Application. Its only public interface is related to initializers and instance initializers, which is then inherited by applications.
Ember.EngineInstance class - The base class for
mount keyword - Allows for the mounting of routeless engines in templates. This keyword currently only takes one argument, the name of the engine.
mount router DSL - Allows routable engines to be mounted at a location in a route map.
#13819 [DOC] Add documentation for container (getOwner, etc.)
#13855 [FEATURE ember-string-ishtmlsafe] Enable by defaut.
#13855 [FEATURE ember-application-engines] Enable by default.
#13855 [FEATURE ember-runtime-enumerable-includes] Enable by default.
#13855 [FEATURE ember-testing-check-waiters] Enable by default.