Call of Duty: Black Ops 2 fans on PlayStation 3 and PC platforms finally get to sample the joys of the Nuketown Zombies map on January 17, 2013. Nuketown Zombies map started life as a pre-order bonus before being released in December 2012 for all Season Pass subscribers on Xbox 360.
The Call of Duty Twitter feed confirms the 1/17 release. It doesn't actually say that Nuketown is tied to Season Pass ownership the way it is on Xbox 360, but the fact that the tweet links to a Season Pass product page is pretty telling. We're checking with Activision just for the sake of clarity, but for now figure that you'll have to own a Season Pass in order to get Nuketown.