Xbox Connect

Because it is all about connectivity. Connect Xbox to a Windows PC, to a Zune with live anywhere and stuff like that

Sex-Box

getting the sex appeal

but seriously

Xbox Next or something

SeXbox

X3 would have the same problem as X2, though. Whose to say that Sony won't release the PS^4?

I think it will be like the Wii and MS will just call it the X

@Hawkeye

Lol, don't you think 'XXX' and 'hardcore' put together will seems a bit, ah, shall we say... adult? :p

Also, 1080 would be pronounced 'ten-eighty', not 'one-eighty'. 

The Microsoft Extreme Home Ninja Privacy Invader To Milk Your Brain Waves And Steal Your Lemonade.

AKA the T MEH N-PIT MY B WAS YL. It's a mouthful but it's hardcore.

They should call it the Xbox 270 (that's right, NOT 720) and make the power button 3/4 of a circle without lights. The whole full circle 360 thing was a bad idea. They should stay away from anything that resembles a ring for future designs.

the NextBox
or XBox vista :P
i like Xbox Connect
or StarBox
or XBot it cleans your huse and makes you coffee in the morning
XBox 360 SP2 (no RRoD)
XtremeBox

It should just be called:
"box"

SeXbox.