Bowling, more commonly known in the Call of Duty community as fourzerotwo made the announcement over Twitter.
Today, I resign from my position as Creative Strategist of Call of Duty, as a lead of Infinity Ward, and as an employee of Activision
The reason for Bowling’s departure is currently unknown as of press time. He also hasn’t shared where he’s going next – and if it will still involve videogames in some capacity.
We’ll update the situation as it develops.
Source: Robert Bowling’s Twitter