Robert Bowling has been with Infinity Ward for a long time. He was the Creative Strategist for the company. He's not any longer
Robert has resigned from the company and is now free to pursue other interests. I wouldn't be surprised if he turns up with Respawn Entertainment with some of his old Infinity Ward buddies.
He has been the face of many Call of Duty games, answering questions and offering up plenty of information. It won't be the same seeing new Call of Duty games from Infinity Ward without him at the forefront.
There's been no official word on why he left or where he will end up with, but I wish Robert the best of luck on his next adventure.