Yep! We're going to try it out in a few interested communities, and if people like it, we'll make it available GitHub-wide. It's early, though, and we want a chance to learn what works and iterate on a smaller scale before introducing it to everyone.
Quibbling over the details is a given, but people are going to like it. It fulfils such a clear need.
Is there any way to apply for the beta? I'm maitaining few communities that could really use this feature!
I haven't seen any official announcements, and this was the only repo I found that had it enabled. Hopefully it rolls out to a wider audience soon!