https://www.google.com/search?q=pokken+tournament&rlz=1C1JUFK_enUS505US510&oq=pokken+tournament&aqs=chrome..69i57l2j69i60l4.3281j0j7&sourceid=chrome&es_sm=93&ie=UTF-8#

Now, obviously this is not an offical statement, but I'm pretty sure this proves it. Look at the image when you google Pokken Tournament. 

-_-

When clicking the link the first article that pops up says that Pokken Tournament is more than a Tekken clone, to which I must say I agree, it's a Naruto Ultimate Ninja Storm (or however that series is called) clone.

Isn't that just from a fan forum?

It's official. Deviantart confirms it.

I don't get it, which image am I supposed to look at? The fanmade boxart?

While this is far from confirmation (to put it lightly :P), I have believed this from the start. For one, it's a Pokemon fighter game. It could easily sell millions on Wii U, why pass up more money? Second, look at the arcade machine's controller. How many arcade machines have such a blatantly console-esque setup?

I was about to scream like a crazy fangirl, then I click the link and it crushed me.

... Why does this need an announcement? Of course its coming to Wii U. The Arcade version, like ALL arcade versions, are  just beta for finding balance/Bug/feedback info.

So a fan made box art is supposed to be a confirmation that it's coming to the Wii U? That's good logic I guess.