Digitimes: Nintendo NX will be released in 2016.

[Miyamotoo]

Wyrdness said:

Miyamotoo said:

Probably for launch we will have 3D Mario, Zelda U port and maybe that Diddy Kong Racing rumour or something else, that would be pretty strong launch titles.

It'll probably be a version of Zelda U and another first party title provided NX is a home console based title, the most successful launch Nintendo has ever had was with a Zelda title after all and tbh Zelda U does does look to become one of the most stand out titles with its open world approach.

Mario 3D World was finished in 2013, and we know long time ago that Nintendo working on next 3D Mario Game, we can easily have Mario 3D game for launch, with port of Zelda U and some game similar to Wii Sports or Nintendo Land it would be very good launch titles.