User blog comment:Callofduty4/callofduty.com updated with Ghosts teasers/@comment-5115149-20130519141859/@comment-1854594-20130519161747

Every major release is on Tuesday, that's the way it's been for I believe years, even alot of downloadable games like the upcoming Call of Juarez: Gunslinger. There must have been some stats or something that show that more money is made by releasing on that day, so that's what the marketing departments all decide to go with.