During Sony’s Live Chat on the PS Vita launching, they confirmed that a Call of Duty is coming “in the back half of the year”. He also said “we are still working on it”. Looks like we can expect a Call of Duty game to be released this year for this new system. During the stream they also said that the game was a “game changer”.
Right now speculation is going around that it will be a PS Vita version of Black Ops 2 however Activision has not named the game’s developer(s), or said if the title will be a port of a past Call of Duty title, or a brand new experience.
SOURCE: GameTrailers PSVita Interview