The video below was uploaded to YouTube today and quickly copied several times. The poster claims that it was put up on the Call of Duty: Black Ops 2 website for a short time before being removed. While that does seem a bit odd, it could have been a mistake and as we know, on the internet someone is always watching.
While the trailer doesn’t give away anything really, if you look carefully during the flash you can see Nuketown. It’s fairly well put together so it’s either authentic or the forgery of someone who is probably good enough to be working at Treyarch. Take a look for yourself.