Along with the announcement that Dead or Alive 5 would be getting an Attack on Titan collaboration, Koei Tecmo is working with another studio. The Japanese based publisher has announced that that they are working with SNK to bring The King of Fighters characters to the Dead or Alive 5 universe.
Fan favorite (mainly for her bodacious animation) Mai Shiranui will be coming to Dead or Alive 5: Last Round, not as a simple skin, but a fully playable character. No other information was given other than a September release window, but considering Mai is a ninja in her own series, she seems to fit perfectly within the Dead or Alive ethos.
Team Ninja will also be releasing a set of The King of Fighters themed costumes for existing characters.