According to Treyarch’s Studio Head Mark Lamia, Black Ops 2′s new and improved version of Zombies has a whole new experience in store for fans of the super-popular horde mode.
For the third iteration of Zombies Treyarch have given the team “a free reign to do pretty much whatever they want with the mode regardless of the direction the campaign is headed in”, and going by the amount of effort put into previous Zombie outings, you can be sure that things are going to get interesting with the Black Ops 2 version. New game modes have already been confirmed.
Another advancement on the Zombie side of things is the fact that it’s now utilizing the same engine that’s used in multiplayer. This means that it’s possible to have 8-players and double the amount of Zombies in one game. But, if Treyarch have decided to up the player count they haven’t confirmed it yet. Maybe their mentioning of it being possible is a hint that it is, in fact, what they’re doing.