The Battleship and What to Expect When You're Expecting trailers have just been released. Hopefully DS is next.
We should only be so lucky. But just as has worked out with posters, just because trailers have come out for several of the films that will be released around the same time that DS will be, it doesn't necessarily follow that the trailer for DS is any closer to being released.
IF Warner Brothers wanted to tie a DS trailer to one of their holiday releases, there are only two possibilities:
Sherlock Holmes: A Game of Shadows and
Extremely Loud and Incredibly Close. However, ELaIC is only opening in limited release on Christmas Day so that it can qualify for Oscars (though given that it was just completely ignored by the Golden Globes, who knows what its chances for any nominations are?) - and its subject matter of a boy searching NYC for the lock that matches a mysterious key left behind by his father, who died in the World Trade Center on September 11, 2001 may not be any sort of fit for the same audience that DS would appeal to. So, that leaves SH: AGoS - and that opens today. So unless a trailer for DS has been released with it and we just have yet to hear, I would say there hasn't been a trailer released with it.
146 days 10 hours 4 minutes 33 seconds until the day the Depp/Burton Dark Shadows is released(ET)!!