After being shown the door by Activision, a few months ago, the co-founders of Infinity Ward and a number of other Infinity Ward team members have gone ahead and formed Respawn Entertainment.
While there is no clue what the new entity is up to,the team has yet to roll out their first game, but this story, wants us to believe that Respawn Entertainment's first game will be a PC game. Though the game will have Xbox 360, PS3 versions too; but after a while.
A jobs listing for the company on Gamasutra supports the above claims.