Sony's senior vice-president of PlayStation brand marketing, Guy Longworth, recently gave an interview to Game Trailers where he talked up the impact he hoped that the PS Vita would have.
When talking about future releases he made mention of a Call of Duty title, due out in the Autumn. He boldly stated that: "We think that's going to be an absolute game changer for the platform."
There were no other details offered about the proposed title, so whether it is an exclusive new title or port of an existing one remains unknown.