I'm not sure I'd be interested in the TV hardware...but if they push all of these new features into AppleTV, I may be more interested.
The only thing I like about my AppleTV these days the AirPlay push from my phone and the occasional movie rental from iTunes. (Much better selection than ondemand from xfinity. And Netflix once in a while...but for some reason I tend to use my xbox for that equally as often out of habit.
Incidentally...have you taken a look at the video service options on XBOX these days? If I were able to use airplay n my xbox, I'd use it for all services more than my AppleTV. Netflix, Hulu, YouTube, and soon HBOGo, Xfinity, and more that I cant remember.