DarkZero writes :We already know that Call of Duty 5 is in the works, and should be released later this year. We also have been informed that Treyarch will be going back to WWII instead of staying put in the Modern Warfare setting Infinity Ward created for the fourth game in the series. At the time of that revelation may were upset, seeing it as a step back from the great reaction COD4 got from critics and gamers alike.
However, recent info suggests that Treyarch will not be stepping straight back into familiar territory with their upcoming game, and will not be yet again placing the player in a European or American setting. They will instead be taking the battle over to Japan, and will likely put players in the shoes of soldiers who took part in the Pacific Campaign of World War II. The exact details of where the battles will take place still remain a mystery, but the focus of the CoD5 story will be on their side of the world rather than in Western Europe this time round"