The Angle Bracket Invocation RFC was merged a few weeks ago and implementation work started shortly afterwards. After identifying the missing pieces needed and working through the checklist there, we have now enabled the feature by default on canary builds. Assuming all goes well during the canary cycle (e.g. we don’t find bugs that are intractable) the feature will land in Ember 3.4.0.
We’d love as much feedback on the feature as possible, but folks rarely test features that can’t be used in stable versions yet. So @mmun and I figured that a great way to get folks to “bang on it” would be to make it possible for addon authors to start using it without dropping support for their currently supported Ember versions. It turns out that we were able to do a fairly good approximation of the “headliner features”. Check out the polyfill here.
Please test (both the polyfill and the feature itself) and report back!