According to a new report from Serebii, the arcade edition of Pokken Tournament has gotten and update that brings new content to the game. A new event began today and will last until June 12, allowing support Pokemon Groagunk & Sylveon to be unlocked. The Mismagius and Ninetales support group are also available to be unlocked for a second time.
Aside from those changes, the update also brings the Support Focused Cheer Skill to the game, as well as new avatar clothing and titles available. No word on whether this content will be brought to the console version of the game, but one can hope for it via a DLC update, right?