There has been plenty of rumours of Call of Duty: Modern Warfare 4 lately. Sledgehammer Games who were a big part of the development of Modern Warfare 3 are looking for people to work on Call of Duty among the duties of the Senior Environment Artist is making sure "the level works on all relevant platforms, Xbox 360, PS3". This implies that the next Call of Duty, at the very least will be developed for the current generation of consoles making it the ninth Call of Duty to appear on Xbox 360.