So apparently a new update for the arcade cabinates for Pokkén Tournament has been released and this update adds a new Boss Fight versus a new form of Mewtwo called "Dark Mewtwo".

https://www.youtube.com/watch?v=qk3UynT0K1A

This update seems like a response to all the people who were complaining about the lack of boss fights and, later on, it will probably  imply the addition of Mewtwo to the Rooster that currently counts only 10 playable pokémon

Looks great! This game is going to be amazing

Pokemon Z: Resurrection of M - confirmed

...
So, are these updates being released more often than just monthly? Because, this simply isn't fast enough to make the Wii U version (assuming an April release) even eight-loaded on con tent relative to the way Smash for U is.

That rooster sucks. He should learn to count more Pokemon before waking the farmer up.

This is very irritating. I've heard of Pokken Fighter's but this is the first time I realized it was a Pokemon Fighting game, essentially addressing my biggest gripe of the series. Having clicked on the video, I am now super interested, but I am now pissed off because I'm just finding about this now.

It's good to know we can beat it by spamming shadow punch.

That finisher move looked awesome though.