Take a look at this glorious teaser trailer featuring Lucario against Machamp.
The game will first hit the Japanese arcades in 2015, and it's probably also getting a future WiiU release. I hope it also gets a 3DS version when it does.
Meanwhile, we are still yet to hear updates on Tekken x Street Fighter.
Source: The Official Pokémon Channel on YouTube, Pokkén Tournament Official Site