I think its safe to assume the portable version of NX will launch sometime between June-Dec. '16. Its also a safe bet to guess it'll be powerful enough to receive Wii U titles, like Zelda UNX.
So unless Nintendo is really desperate to ditch the Wii U because of negative branding/image issues, they can actually ride the NX and Wii U combo for a year or two. There will be no urgency to release a home version of NX, and Nintendo can take its time to decide on whether they want a simple tiny box version of the portable, or a higher end version. The longer Nintendo takes, the better chances of them going with the modern AMD 14nm tech. which IMO means the worst case scenario would be a PS4 level system in 2017.








