User blog comment:Damac1214/Treyarch hints at Black Ops II Multiplayer trailer/@comment-80.180.83.79-20120726075840/@comment-92.84.110.237-20120728224450

Well the rest were DLC, i judge the game as it comes out not as it adds extra payed content. It may have gotten big a while after release, but the way it was shipped, you could hardly tell they cared about zombies that much.