I couldn't find a thread already about this surprisingly. If there really is one, you can just merge this with that one.
Anyway, if you've been living under a rock and/or just don't care that much about Nintendo: The NX is planned to be their new console to compete (or at least be on the level of) with the Xbox One and Playstation 4, considering the Wii U didn't really meet up to those expectations and was practically a commercial failure (not hating on the Wii U because it's true, plus I own one regardless).
There's been several rumors about the NX since it's been confirmed to exist. One of these is that it will release during the holiday season of this year. This rumor came from SuperMetalDave64, who claims to have an inside source from Nintendo. This is believed by some people considering his "inside source" has been right about games released for the 3DS before any word about them came out (Pokemon Sun & Moon, Disney Art Academy) and the fact that his source was confirmed reliable on NeoGAF.
Another rumor from him is that the NX will be at least on-par with the Playstation 4 and more powerful than the Xbox One.
If you'd like to watch his videos on the NX, here's the link to a playlist of them.
I'm a fan of Nintendo and personally, I'm excited to see this come out. I really liked the Wii U's first parties (Splatoon, Mario Kart 8, SSB4, etc.) and to see them making a more powerful platform that will [hopefully] actually have third-party support, unlike the Wii U, that's pretty great.
EDIT: There's also been an AMA on Reddit from a supposed AAA dev who has an NX dev kit: https://www.reddit.com/r/NintendoNX/com ... a_real_nx/ And yet another one: https://www.reddit.com/r/NintendoNX/com ... he_nx_ask/
Also, there's been rumors from 4chan about the NX: http://i.imgur.com/tXjSvIV.png
So, what are your thoughts on the NX? What hopes do you have for it?