A first-look trailer, which can be viewed below, was from the Official Pokemon Channel on Youtube. It too says that Pokken Tournament will only be available in Japanese arcades at this time. Presumably Nintendo and The Pokemon Company will watch fan reaction to the game to decide if there is enough demand outside of Japan for them to translate and release the game.
This will be a really cool game,especially for Pokemon Fans and Tekkan Fans.The game is being developed by Tekken producer Namco-Bandai, who also teamed up with Nintendo on the upcoming Super Smash Bros. for 3DS and Wii U. A full release date is not set at this time, but we know the game will hit Japanese arcades in 2015. Whether it will travel to any other countries, or be released on a non-arcade platform will have to be revealed at a later date.