Because you seem to want to continue this charade forever, i'm going to have to shut you down, so let's dig in to your most ludicrous claims and do just that.
Claims to know what the NX looks like
False: This early in a consoles lifespan if developers have devkits, they do not look anything like the final console, neither do the controllers, the CAT-DEV v2 WiiU devkit was a large black box with a square looking gamepad attached, it was only AFTER the WiiU console was finalized and already shown off to the public that CAT-DEV v3 shipped with a retail-looking controller.
The devkit NEVER LOOKED LIKE A WIIU, the few pictures people have seen of a green faced WiiU is not a devkit, it is a TEST unit, hence why it's called the WUT-002 (Hint is right there in the SKU, WUT stands for WII U TEST) So even if you had access to development hardware (which you don't), it would look like a nondescript, boring metal box, and be much larger than the final retail unit.
Claims to know the final name, NEX
Ever since the days of the SNES launch, companies have flat out avoided launching using the same or even remotely similar name to it's development codename and even then the initial codenames varied greatly from the final name, eg:
Project Cafe - WiiU
Revolution - Wii
N2000/Dolphin - Gamecube
Project Reality / Ultra 64 - Nintendo 64
Atlantis - GBA
Dot Matrix Game - Gameboy
Candy - Atari 400
Coleen - Atari 800
Stella - Atari 2600
Pam - Atari 5200
Mercury - Sega Game Gear
Mark V - Sega Genesis/Mega Drive
Jupiter - Sega Saturn
Venus - Sega Nomad
Mars - Sega 32X
Neptune - 32X/Mega Drive combo unit (unreleased)
White Belt (Katana, Guppy), Black Belt (Shark, Dural) - Dreamcast PS-X - PlayStation
Arc - PlayStation Move
NGP (Next Generation Portable) - PlayStation Vita
Orbis - PlayStation 4
Xenon - Xbox 360
Project Natal - Kinect
Durango - Xbox 720
So why you want anyone to believe that Nintendo would announce the codename as being NX then release a final product that is called "NEX" is unknown to virtually anyone but yourself, Additionally, being a Japanese company, Nintendo would want to actively avoid having their product mixed up with the following established Japanese product lines and services:
N'EX - Narita Express
NEX - Range of Pioneer car head units
NEX - Navy Exchange
NEX / NEX Zero - Pepsi soft drinks in Japan
NEX - A range of SONY digital cameras, why in the world would Nintendo use a name that could be associated with their direct competitior?
NexToys - Tokyo branch of a toy distributer/retailer
NEXSTREAMING - a somewhat popular streaming service available in Japan
With all these key products and services well known to Japanese customers, Nintendo would NEVER use NEX as their consoles name.
So-called proof
Firstly, you have your email letter from Nintendo, so let's start with that shall we.
1) Developer emails, staff emails, pr emails, pretty much anyone with a Nintendo email will send mail that comes from @nintendo.ext only, your picture claims @nintendo-europe.com, probably in your haste to throw together some verification material you forgot to check if it was even a legitimate origin, it isn't, nintendo-europe.com is simply a redirection hub used to allow visitors from europe easy access to find the appropriate nintendo.ext page for their given country.
2) It's company policy to use @nintendo.ext emails only for work, no other domain layout is permitted, as part of their corporate identity and employee guidelines.
Secondly, we have the linkedin screenshot.
Unfortunately for you, I handle recruitment for my company and recruiters membership to Linkedin, thus I have full access to linkedin profiles. As such, using simple filtering I was able to find the following:
//// NOTE! theres are the actual people shown in this guys "Proof" picture ////
First connection: Sophia is a low level job doing grunt work - "My role involves assisting the design team with creating banners, backgrounds and material for the website, newsletters and social media." Accepts any connection request.
Second connection: Interaction designer at google, No longer works at Nintendo, Accepts any connection request.
Third connection: Denis Works in social media, accepts any connection request.
Adding any of these (Indeed, while investigating I was able to add all three with ease), results in "x shared connections" when scrolling through the list of Nintendo of Europe employees, because that's simply how linkedin works. however going through the connections of all three people I was able to narrow down the number of people who shares the same number of connections amongst the three identified people all the way down to two, neither one of them holds a position related in any way to game development, any other person cross referenced from the list of the three users turns up dramatically different shared connection numbers.
I'm not going to out you, because that would be considered doxing, but believe me when I say this. The game is up, the shows over, you can stop lying now.
Sorry but if you're going to publicly post your "proof" you should expect someone somewhere to vet it properly, I did, and you're a fraud.