Activision and Treyarch have already announced that there will be a total of 4 map packs, or DLC packs as Activision likes to call them, for Call of Duty: Black Ops 2.
You can either buy the map packs separately for $15 a piece or you could buy a Call of Duty: Black Ops 2Season Pass for $50 (4000 MSP) and save $10. Season Pass holders will also get the Nuketown Zombies map and an exclusive in-game calling card. Season Pass holders will NOT get early access to map packs.
The map packs are expected to be available in 2013. When more information about the map packssurfaces, you’ll be able to find it here.