Even if they did reveal a new Xbox with great specifications, im sure they will find some way to junk it up with tons of advertisements. Im sure they'll remember not to include a native internet-browser in the OS, it would 'ruin the experience for the living room'.
I really love paying for "Xbox live" service, they give me the inside scoop on the latest junk and ads from sponsors. Sorry i don't feel like shopping every time i look at my game console; perhaps I actually want to browse the internet (without a terminal computer) as part of the service I pay for.