Its a lot of talks lately on gaming forums about NX will be ne next Nintendo home console and will launch in 2016.
I think its a big misunderstanding of what Nintendo authoriries were saying.
1. I never saw Iwata saying NX is the console. He speaks of it as of platform.
2. They will explain it next year. Nintendo is a conservative company. So if they show new console, home or portable, next e3, they wont pull a dreamcast releasing it in 2016. They'll get it for 2017, gathering feedback from gamers and building relations with 3rd partys from scratch.
So I think their behavior will be following:
1. Next year they'll show the NX platform. Which will be not a console, but infrastructure + dev tools. (Think ios/android witĥ a focus on touch/motion controls, and 2 screen gaming possibility).
2. Same year different date they'll anounce Fusion console which will be a hybryd between WiiU and 3ds, with games to be playable portative way and on a big screen, launching 2017.
3. Qol platform is the escape plan. If gaming industry is less interesting for business, they need a way to jump from the ship before its too late.
4. Mobile games will be a first nx software, then wiiu/3ds will be addid to it end of 2016. Also mobile games will be a possibility for Nintendo to use their brands/knowledge if/when gaming industry will start falling.
Thats my opinion on the situation, will add more soon, waiting for your comments!