How Many Copies of Halo 3 Will Ship this Month?

Just how many copies of Halo 3 do you think will ship this month? 3 million? 4 million? Nope, if a projection by Goldman Sachs is correct, you will have to try higher! Gamespot reported the following:

In a company update on Microsoft today, Goldman Sachs analysts Sarah Friar and Frederick Grieb predicted that Microsoft will have shipped a mighty 4.2 million copies of Halo 3 into the retail channel by the end of the month. That's a big-enough launch shipment for more than a third of the Xbox 360's 11.6 million global user base to pick up a copy.

Note the final sentence... more than enough for over one third of the current Xbox 360 user base!