How much will Halo 4 sell?

[Millenium]

Hehe, was bound to happen

Anyways:

Week 1: 4.3M-5.0M (I'm optimistic)
Week 1 - 10: 7.0M
Life-time: 11.7M-12.7M

This one will be a lot more in line with Halo 3 than Reach I think.