PS3 was at some 9M at the beginning of this year... I predicted 13M worldwide earlier this year... That makes some 22M total. Not bad I guess; it's definitely reachable. I really don't have time to make calculations now but 22M sounds pretty good to me so I might actually stick to it.
EDIT: Oops, my prediction was actually 14.2M, not some 13M. Anyway, it's not that much more. According to that, PS3 would be at some 23M-23.5M. Still not impossible, but ever harder than 22M. However, since it's possible I guess I might stick to my numbers and hope my predictions turn out to be correct.







