It is out.
Per the Pike Facebook, yes!
Well, It comes out this Fall 2010
Yes
5 as of 2013 The 5th one came out in the spring of 2013.
Well if you live in The US then the librarian at borders said sometime in December
October 5th 2010
There are four books in the Thirst series by Christopher Pike.
Teen Thriller or Young Adult Thriller
It says on the last page of The Eternal Dawn in the About the Author section that "Thirst and Alosha are slated to be released in featured films."
The climax of the book Thirst is when Yaksha (Sita's creator) is searching for Sita trying to kill her.
Yes - Thirst No 3: The Eternal Dawn // The Last Vampire 7: The Eternal Dawn (Oct 2010)
Sita, One of the last vampires on earth struggles through situations.