From Bulbanews, your community Pokémon newspaper.
Blaziken finally confirmed after appearance in teaser
With the release of Pokkén Tournament in Japanese arcades, Blaziken has been announced to be an upcoming fighter in Pokkén Tournament. It will be available in the game in August this year. It will be able to Mega Evolve into Mega Blaziken in the game.
Blaziken was originally featured in the teaser for an unknown game (which turned out to be Pokkén Tournament) shown at the end of a retrospective shown at Pokémon Game Show.