Most likely nay. The majority of XBOX exclusives I don't really care much about. And if it has to always be online? No thanks. I'll likely stick with Playstation and PC.
No, mostly because I like the Xbox360, don't have the money to buy a new console, mostly play games on my computer now, and also if it doesn't have full backwards compatibility, then I'm never getting it
Rumors are is that there is no backwards compatibility. I'll be very disappointed if this is true -- this is a crucial selling point for me. I used to be a large gamer but nowadays I hardly even game anymore (aside from immersive single players like Bioshock). I use Xbox as a tool for communicating with friends more than anything else. I'll upgrade if they do, otherwise no.
The latest rumor is that the always-online requirement will be up to the game developer's decision. If that's true, at least we'll know which developers are complete idiots. But it's all rumors and hokum for now.....at least until the 21st.