I kinda expected this... I hear it's late Feburary through to Easter.
Sucks, but I guess it'll be worth it if you've seen the IGN videos, you'd see some of the error's they're dealing with.
They've also decreased loading times by 400% which will be handy if you're used to MW on the Xbox like me.
Anyway...

Life goes on. I've got Call of Duty 2 and Perfect Dark Zero for now
