Activision and Treyarch haven't announced the next map pack for Call of Duty: Black Ops 2, but that hasn't stopped fans from uncovering details on the DLC.

Discovered at what appears to be a Best Buy, MadAssGamers has found new promotional materials that indicate the second wave of content will be coming on April 16th. Dubbed "Uprising," the add-on will include four new multiplayer maps, as well as one new map for Zombies. As was with the previous DLC, "Uprising" will be available first on Xbox 360, with PlayStation 3 and PC to follow (likely one month later).

The four maps included are Vertigo, Encore, Magma, and Studio. The new Zombies map will be Mob of the Dead. There does not appear to be a new weapon as part of the content, though that's not necessarily a bad thing. The DLC doesn't have a price as of yet, but will likely fall under the same $15 (1200MSP) price point as the previous content "Revolution."

We'll be keeping our eyes open for the official announcement, so stay tuned for more details and potential screenshots.