If it is a world wide release I say 1.5 million: 650 k U.S., 750 k Others, and 100 k Japan.
But if the launch window is 'scattered', then I will say day one in the U.S. 690 k (the increase is due to importing). Others first day could be like 610 k and Japan will still be 100k for a total of 1.4 million.
This series will be the first for many this generation (I had an xbox last gen), so many people I know are looking forward to this game.