Black Ops 2: Uprising DLC Leaked ?

There has been a leak revealing the next possible map pack for Black Ops 2. There was a note on the Xbox Live theme that said, "Download the epic Call of Duty: Black Ops II Uprising Theme, featuring Studio, Vertigo and the Mob of the Dead, Treyarch’s most terrifying Zombies experience to date.”
This is all just a rumor as of now, and we will just have to wait and see until Treyarch releases more info.