Sorry for this late post, but as you all know (or know not) WB has released another below 2 minutes short trailer for Half-Blood Prince. I don't know whether this trailer is theatrical (as theatrical trailers are generally over 2 minutes), but whatever.
This new trailer focuses on the darker side of the movie - Inferi, Tom Riddle and Memories. It contains some new sequences from the film.
Check it out :-