The reason I'm interested is that we may finally be getting some updated hardware in what could be a terrific device (greater than the current version).
I'm so hoping that Apple will use 1080p hardware. If so, that would be enough for me.
The rumors imply that it will be at least a bit more open than

TV because it will have the option of third party apps. A lot can be done by third parties, which were sorely missed- other than a few hacks- on the current

TV.
If Apple has chosen to open up the software side, maybe- just maybe- they'll leave a little room for hardware add-on options too, perhaps through a normal USB port or two. If so, that means companies like Elgato could bring some functionality through a USB attachment plus app that are desired by some people.
Some argue there's no way Apple would open it up that way, but all the other iDevices have add-on hardware options that can work with third party software apps... so why not this thing too?
Thus, my hopes favor those three things: 1080p (whether there's any 1080p content in iTunes or not, whether your broadband pipe is big enough or not, whether you think "720p is good enough" or not, etc), apps, and normal USB port or two. I'd pay more than $99 for that one- even a lot more- as I know the third parties would fill in any desirable gaps selectively left out by Apple.