Really? Wow. I'm going to sound like a fanboy here. I can't see being into console games at all and not owning a 360 at this point. Without it, Peggle and old games would be all my entertainment. I'm done with Mario Galaxy, MP3 and Super Paper Mario. If anything, it's the Wii that makes me wonder if I could use that desk space better.
I'm also surprised that you all are worried about some magical variation of the 360. Whatever it may be, if anything, isn't going to obsolete the standard. Microsoft is not stupid, and it's way too early for Xbox 3.