"Okay it's official - #CODBlackOps to have more Zombies! Also, #DerRiese coming to the iPhone & iPod Touch tomorrow."
Press release announcing zombies. http://investor.activision.com/releasedetail.cfm?ReleaseID=512262
GKNOVA6 has also been remade, featuring zombies, fleeing scientists, and test subjects featured on the screens. A zombie can also be seen in the upper left trying to break into the room.