Summer 2013, but it really does depend on the fact the PS vita continues to sell poorly. What's stopping the Wii U from selling badly too, it could easily sell like the 3DS in it's first year
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018