If comcast (ever even offers) 'upgrade' boxes for purchase, I know Direct TV (satellite) has upgrade choices in (box and dishes) coming out this fall. I'm waiting to purchase till then, since in the fall the factory installed triple-LNB HD dish will be on shelves. If I purchase a dual LNB dish now I'd have to aquire and add the TERK's Sat C Kit.

Start looking this fall (if you want to replace your box) or call to see if Comcast has intents for similar.