In the back of Thirst No. 4, in the author’s note, it says:
Thirst and Alosha are slated to be released as feature films.
Alosha is another series by Christopher Pike. Anyway, I looked up Thirst on IMDB, and all I got was a foreign movie about a priest who gets turned into a vampire.
They really should make the series into movies though. It would be epic.