While I'm 110% with you on the desire for a new

TV (personally I'd rather see them announce that than this Tablet), I just don't see it making any sense for this Tablet to be perceived as the next-gen

TV. That only works if you are single living alone. Then, when you take this new super mobile device with you, no one back at home suffers at the loss of the

TV.
Making this Tablet have options to play content on TVs makes a lot of sense. If it is going to be some kind of pseudo-laptop replacement, it is going to need a way to show media on screens other than it's own (for example, a keynote presentation via a projector). But I really can't see it working as a mobile

TV for anyone other than single people living alone.
The next-gen

TV should be its own device (like it is now). Build in a dock option if Apple wants the Tablet to easily link to it, but I hope Apple won't try to make this mobile device merge with a stationary device meant to always be connected to a HDTV. After all, how often do you pick up your dedicated DVD player box and take it with you?