According to VOX Games, Comcast's Xfinity On Demand service for Xbox 360 won't count against subscribers' bandwidth caps. That's good news for Comcast customers who were concerned about running afoul of the data cap because they decided to view some video content "over the internet." Of course, it would probably better news if Comcast was announcing that it had decided to eliminate data caps altogether, but we'll take what we can get.
The clarification on this comes from Comcast's official FAQ for the service:
"..since the content is being delivered over our private IP network and not the public Internet, it does not count against a customer's bandwidth cap," reads the FAQ.
The FAQ also reveals that the Xfinity TV app will work with Kinect and will be integrated into the Xbox Dashboard's search system.
Xfinity On Demand is slated for release on Xbox Live sometime in "early 2012" - which could mean at any time...
Source: VOX Games