This news shouldn’t be surprising at all since everyone knew this was going to happen.
Amazon Germany has listed Call of Duty 10, and considering the 9th version was Black Ops 2, this should be pretty much be Infinity Ward’s turn to best Treyarch. Activision has been alternating with these two developers every year so it really shouldn’t be shocking if this turns out to be Modern Warfare 4.
It will be interesting to see if it will be a cross-platform title or not but for now Amazon lists it as a PC title, and the image there is obviously a placeholder. The game should be revealed in a few months, possibly before E3, but for now this sort of confirms that a new Call of Duty game is in development.
Before they remove the listing, here’s a screengrab: