For you German readers, I have great news! I just sold Book #5 of The Blood Coven Vampire series to my German publisher for a summer 2010 release!! So not only do you get Book #4 first, but you will also definitely get more books! Yay!
As for America, we're working with them to push #5 as we speak. But they have until January to decide. Basically they may wait to see how the re-releases of the first three do as well as Bad Blood. The more popular they are, the more chance we'll have of them wanting to do Book #5. So be sure to keep up the good work spreading the word about the series to friends!!
Book #5's title is NIGHT SCHOOL and it deals with Sunny and Rayne hiding out in an exclusive European vampire boarding school. Can't tell you why - but when you read Book #4 you'll understand!! :) Yes, it ends with a cliffhanger!