Well it looks like that next week the 3 next gen systems will hit a combined 50million.
They are currently at
Wii 21.93
360 17.22
PS3 10.35
For a total of 49.5 milllion as of the week ending the 23rd, without Japan data, and it's unlikely Japan will account for 500,000 sales.
I expect them to reach 50 million when the American data comes in next, but depending on Japanese data for this week, it could reach 50 million when the Others data comes in.