I don't know about 2008, but 2009 sees the release of the prequel to Underworld that shows the beginning of the entire legacy and will determine if there's going to be a 4th to finish the series.
And the release of "Castlevania: The Movie" which is based on the longest running Vampire based game series there is. And the biggest budget Dracula based movie for a few years now, well he's in it lol.
Theres a slew of Buffy related material coming out this Winter but thats still closer to 2009.
If the Harry Potter movies work a few into the background as they were alluded to in the books, then the earliest opportunity is still '09.
Nope, definitely next year.
Don't forget they canceled Moonlight and Blood Ties isn't doing so well. I love Vampire related stuff, but not everyone does, it rarely breaks into mainstream appeal.