46FD04, I don't think that would ever happen. You'd basically need the receiver to emulate/send the OTA signal to TV2, which I don't even know is possible, and if it is, I'm sure it's the last thing on Bell's to-do list lol. It would require TV2 to have an ATSC tuner, which most (all?) modern TVs have, but not everybody has a modern TV. The amount that it would cost to create this technology wouldn't be worth it unless they charged a fortune for the receiver, and even then they'd end up selling less 6400s.
I think that Pinza is probably on the right track. It will probably be an updated version of the 9242, with no component outputs (like the 6400), with TV2 via coax, a larger hard drive and the same guide/menus as the 6400. Nothing groundbreaking, but it sounds like it will be on par with the 9242, with a few extras.