Sledgehammer Games, during their GDC 2014 panel, revealed the first-ever look at the 2014 release of Call of Duty. It's not much, but it's all that we have right now. IGN has the image, seen below, that shows off "actual in-game characters."

According to Activision, the game is targeting "next-gen first," which I assume to mean the current-gen consoles of Xbox One and PlayStation 4. Next-gen consoles are still a few years out.