A post on this is xbox.com reports a rumor that Infinity Ward's next installment in the Call of Duty series will be a prequel to Call of Duty 4: Modern Warfare that will focus on the back-story for Ghost. They attribute this to a "source within the industry," saying this source has been accurate on several other tips in the past. Word is: "players will revisit locations from both Call of Duty 4 and Modern Warfare 2, but this time from a different viewpoint," adding that this rumored game will use the same engine as Modern Warfare 2. They also say it "will not be released this year under the title of Modern Warfare 3," though that wording doesn't make it clear if they are referring to the release date, the title, or both. Thanks Eurogamer.