Fans seem to think that this tease is for the next zombie DLC pack, the final add-on before Call of Duty: Ghosts' release. Starring younger versions of "the original characters," it appears this map will take place in World War 1. But with a giant mech, somehow.
Andrew Yoon posted a new article, Call of Duty: Black Ops 2 teases its 'Origins'.
Treyarch has released a rather cryptic video to its YouTube channel. Entitled "Origins," the Black Ops 2 dev notes that "every story has a beginning... and an end."