Considering Wii U is on track to sell less than 1/5 the hardware & software of Wii, I would say a lot of people wanted a Wii but not a Wii U.

Not touching the rest, it has been discussed to death already (especially by me); but that part is not so hard to disprove. The PS3 was still 299 when the PS4 came out, only a little over two years ago (with one basic slim unit being cheaper, the main 500GB model was still 299, it can be compared to Wii U Premium, which has sold the most by a ridiculous margin).

Opinions are fine, but what you're saying there is simply false.

Yep, I also don't think the Wii U is getting replaced this year. It would be too early to adequately give the new home console a strong launch lineup of games, especially if the rumor that developers had just received the dev kits in October is true. It takes about 2-3 yrs. for most good AAA games to be developed which, if that rumor were true, would mean that good AAA games would be ready around fall of 2017 to 2018. So I think a release of a home console before fall 2017 wouldn't be in Nintendo's best interest and probably not happening.

Finally, somebody else gets it. Iwata only mentioned NX to put an immediate stop to doom mongers that would think Nintendo are going moble only or third party. 

We will get more details on NX this year, but I also believe it would be for 2017. And the games at launch and 3rd party games would be much better and in line with what 3rd party developers need for easier porting.

Builing a new game/new IP just over a year with the dev kit would be very unlikely but providing it to third party developers is the most likely scenario in which if they make a x86 based hardware and its easy to port to you could be seeing yearly franchise and other multiplats at launch time. I'm fairly sure the NX will laucnh with the likes of Fifa, Madden and COD and theres nothing to stop a large ammount of Japanese third party developers getting there 2016/2017 PS4/Xbox games there planning to release ported for a NX launch title or within 2-3 months afetr the launch period.

I agree. While some people are arguing about the Wii U lineup, i certainly don't see an NX one either. Sure, you can dish out the argument that none can really be announced at this point, but you have to take into consideration that a lot of Nintendo's studios are busy with projects for current gen systems. The only possible games at this point that could come for NX are Pikmin 4, of which we haven't been told what platform its on, and Zelda U, which is simply from the suspicious delays. However, Zelda games tend to be delayed often so you'd have to tread lightly there.

But really, any of us could be right or wrong, but Nintendo hasn't said a word in-terms of any details for NX, so all we can do and should do is wait patiently until they do so.

You thinking the supplementary add-on be for Wii U?  Because if so, I honestly can't see what prot they use on the Wii U to get data trasnfer rates fast enough to make a difference.

I was more thinking that since Nintendo atm is between geenrations, They would release new hardware that is perhaps PS4 level. Then the supplimantery box could be a $200 addon that boosts it to say perhaps 4K gfx or even support VR properly. 

The box in theory could come out whenever. WIth x86 architecure it be scalable like those  alienware laptop with those addon video card boxes. to run in SLI mode

you need some lessons in economics. nintendo was starting on wii u games in 2011 and 2012, don't come pulling out of nowhere that development for 3ds and ds stopped wii and gc games.

I think a lot of it depends on when they will release Wii U Zelda. If it's coming near the holiday season, then I highly doubt Nintendo will put out a new console to take away attention from it. That is unless they decide to put the game on both console and announce a simultaneous release of the game for both of them, but there's been no indication of that yet.

Even so, I don't expect a new home console from Nintendo until next year at the earliest.