Reckon it will be good, but I don't want to spoil the surprise of the film by watching the trailer! I'm weird I know, but I don't like to see "what's coming up on the show" sort of stuff - like they do for yank shows. I like to be pleasantly surprised, or not as the case may be.
They had some behind the scenes stuff from Episode 3 on the new DVD box set. Had the trailer too I think. Mate of mine sent me a draft story line a couple of years ago but then everyone knows how it all ends anyway!