Yessum, this is fourth game of the Call of Duty series. Though, this time, the Call of Duty series has left behind the World War II-based and introduced a modern-type of game that is held in modern times. Thus, a new theme and new storyline for "next-gen" consoles.
Personally, I enjoyed Call of Duty 3 on the Wii. The game play was good, though it lacked in a few aspects, including no multiplayer. >_> I've also played Call of Duty 2, in multiplayer for the Xbox. I enjoyed it, while I played it. But, this new idea... I'm iffy on it, though, it is a step forward I guess you can say.
The trailer(s) for Call of Duty 4