With my insider knowledge, we should be seeing something like
Wii - 46m
X360 - 26m
PS3 - 20m
by Jan 5, 09.
Nintendo forcasts shipping ~52m by March 31, 09. Even if we say 8 million of those are sold in 09, you are still looking at ~44m units. But Nintendo also admitted to upping production in November/December by a small undisclosed amount.