I know very little about it other than that it is WAY too soon for a new console. I hate that they are moving to new consoles so quickly. The Wii U came too soon, and I'd even argue the Wii came too soon too. I don't plan on upgrading for an extremely long time.
The gap between NES and SNES was 5 years. The gap from the to the N64 was 6, then it went to 5, then to 5, then the longest in its history with a 7 year gap between the Wii and the WiiU. If a new Nintendo console comes out in 2017 it'll be back to a 5 year gap which is the same as almost every other console they've made.
The Playstations have gone 6-6-7 and the Xboxes have gone 4-8. If anything, the gap between the current gen and the last gen was way too long, especially for what they actually provide in terms of an actual upgrade.
The WiiU is deemed a failure regardless of how actually "good" it might be because it failed on almost all commercial levels possible.
NSMBU and Nintendoland were the only notable exclusives for almost the entire first year, then it was backed up with a Wii Sports sequel, Luigi versions of NSMB and Dr Mario as the next holiday season approached. DK Tropical Freeze, Mario Kart 8, Captain Toad, Bayonetta and Smash Bros were in a good-ish 2014 lineup, but at the expense of tons of multiplatform games that either ditched the system or made those versions laughable. 2015 gave 4 games - Splatoon, Kirby, Yoshi's woolly world and Xenoblade - along with one of the worst mario partys ever and scarce multiplatforms again.
Then you've got the sales figures which show it at a third of the PS4's while having a 1 year boost (although, let's be honest nobody is dethroning Sony this gen) and equal to the June 2014 figures of the Xbone (when MS decided to no longer admit to how much their asses were being kicked by Sony). There's only 2.5x more WiiUs than Playstation Vitas in the world - considering how huge of a failure that thing is considered to be, it's not a good thing.
Lastly, the name. It's terrible on so many levels.
The main reason people are hyped up for the announcement of the new console is because nintendo have shown signs that they're going to just go bonkers in developing something as outrageous as the N64 or Wii were to rebound. Your Virtual boy sucked so much it's not even listed as the successor to the SNES on wikipedia? Here's the N64, one of the most out there systems ever thought of that actually turns out to be groundbreaking. Gamecube gets made fun of because it looks like a lunch box and the controller design looks like they just said "hey that wacky as fuck N64 controller worked, now let's make one ON LSD!"? Here's a console that's going to sell over 100 million units without even trying. Who knows what they'll do in response to the negative WiiU feedback.
Oh and one last thing: PS1/N64 > 16bit and below eras