@Kryptos: We haven't had much time to spend on it, sorry... really just two devs working on site features, only one was working on the Xbox One app... also the person behind the player on the site and the Windows 8 app (and many more things that are not as visible). We will see what we can do to raise it in our priority list though! We'd like to see it too!
Thanks for the update. We all know the feeling, lots to do, so little time or resource ;) We might not say it enough, but we really do appreciate all the work that the C9 team do for us developers.
Of course, if you could get it ready for BUILD 2015, so I can watch the keynotes and sessions on my big-screen without having to use Play-to-Xbox of the downloaded MP4, that would be super cool.