If you guys look at the trailer again at the end, you can see "Nintendo" as a producer. And the president of The Pokemon Company said it's "releasing in arcades first" implying it will be released on another platform, Wii U.
Also this..
Director of this game (Harada) responding to Twitter questions
Q: Is it true that Tekken characters [will] be making guest appearances in Pokemon/Pokken Tournament?
Harada: Ha, ha, ha. Nope, Tekken characters will not be making an appearance.
Harada: As we're making a Pokemon fighting action battle game, I've already touched on this while on the livestream, but in this game there will not be a high/mid/low guard system mechanic. Instead, we're planning to include a new type of [mechanic]
Q: -As it's a fighting game, I'm a little worried that the roster will be full of humanoid-looking Pokemon.. I'd rather be surprised with unexpected picks instead.
Harada: That's not a problem at all. Technologically-speaking, we shouldn't face any problems in implementing whatever Pokemon we want. In terms of the system mechanics, we'll be looking at what fans would want, so please rest assured.
Q: Congrats on making Pokken a reality! And thank you for that! Rather than tweet you a request, today I've got a bit of a query: in Pokken Tournament it seems like Pokemon trainers do not exist? It's not that I'm requesting for them to make an appearance, but rather I'd just like to find out if that's the case.
Since Nintendo has recently been showing support to the competitive Melee scene, it would be really cool to see Nintendo push for this to be at EVO, APEX, or MLG.