Comcast is back with what it's calling the third major release of its Xfinity TV app for iOS, and while the product team says it's added streaming content from IFC, Adult Swim, BBC and more the key upgrade is in customizations. It features a new favorites list that is most improved by its ability to sync with the XfinityTV website, a new channel keypad for quick changes when used as a remote and the ability to jump to specific dates in the TV listings. The iPhone version has also gotten a tweak, with the addition of a "flip through previous channels" fe
