Aerys on 08 January 2014
PS4 will reach 5M by january, then Wii U will be at 5,5-5,6M. So it will obviously happen in February, the day of the japan release or a week before.
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m