Well they do have that deal with Mario Kart 8. EU/UK will see a huge increase for sure, it will be tamer on this side of the ocean

First: 150 - 160k
Second: 100 - 125
Third: Levelling off at 60 - 80k per week until the 31st of July

Putting them in line to break 7 million and be in the range of maybe 7.2 or 7.6 million units sold, while PS4 will likely hit the 8+ million at that point because of Watch_Dogs.

In the summer, expect 3DS/2DS sales to increase dramatically because of Smash Bros, and expect Xbox One to hit 6 million units sold by end of June.

Crap ton of predictions, who knows what will happen post-E3 for all the consoles