I've heard many different things about dlc4 and zombies. Some people say there will be a zombie specific map pack, and others say that Buried will be the last BO2 zombies map.
Buried is the final map in the story of the "new crew" dlc4 is being done by the campaign team (team that done MOTD) so it wont have navcards, bank or anything.
Please at least research things before you post. the campaign people made mob of the dead because the zombies team was working on dlc 3 AND 4.
mikeyb244 was right thath 3arch post on twittter and they also says m.o.t.d was by campaign team final dlc zombies pack is like call of the dead with movie stars or something else