It's called "Surprise" and it was directed by Guy Ritchie. It involves a lot of people blowing each other up, including Robert "Iron Man" Downey Jr. That's about all you need to know.
Black Ops II is out on November 13 for just about every platform you can think of.
Now I need your help. I recognise Robert Downey Jr obviously, but I don't know who anyone else in this trailer is. Do you recognise them? Let me know below.