Here's the trailer released just a few minutes ago: http://www.gametrailers.com/video/exclusive-debut-
Feel free to post images and text.
I't appears to be that the soldier being presented in First Person View is in the time frame of the near future, if you look around in the first few seconds of the trailer, that does not look like it came from the time frame of the Vietnam War. The voice you hear says something like, "Let him rest, this should make him remember everything", then it flashes to scenes of present wars, the man probably wants something or discover something from the past. Maybe, zombies are more involved in the story? This story seems familiar with Assassins Creed 2 with all the mystery. The trailer tells alot. The man goes into a "aminus" goes to vietnam, retrieves something that the man in the trailer wants. THIS IS AMAZING.
Let's not forget Treyarchs futuristic logo in the beginning of the trailer.
Yep, its modern day. 2010:03:2