"Reviewing some radio-chatter VO we just finished recording for Modern Warfare 2 today," read Bowling's Twitter. "'Cujo Two-One this is Vulture, solid copy on all.'"

Though the Modern Warfare 2 subtitle has been floating around since publisher Activision mentioned it last December, the company quickly labeled those reports speculative, despite being based on an Activision presentation attended by the press.

While a new entry in the wartime shooting series, World at War, was released last fall, Call of Duty 4: Modern Warfare developer Infinity Ward had little to do with the title, which was instead handled by Treyarch. This strategy, dubbed leapfrog, allows Activsion to release a new title annually whilst providing studios with plenty of development time.

Platforms for Modern Warfare 2 have yet to be confirmed, though PC, PlayStation 3, Xbox 360, Wii and Nintendo DS releases are a safe bet given the history of the franchise.