Turkish on 03 August 2014
Wii U successor will probably come in holiday 2017, thats still 3.5 years of riding the wii u out, a long time. I cant imagine what games they'll be making after Zelda, I hope 2016 and onwards doesnt resemble the transitioning period between Wii and Wii U with those year long droughts.
PS5 will likely come out at the end of 2019 making the PS4 gen 6 years long. Next Xbox is a bit difficult to predict, if they get beaten hard by Sony this gen, MS could stop making consoles or hasten the release of the next console, giving it a 1-2 year head start. Could try to be disruptive like the 360 again. But it'd suck for the Xbone owners as support for their console would only be 4-5 years long again.
