When will Margaret Peterson haddix's second book in the missing book series come out?

News Update-Winter 2008

I've been telling people that the second book in the Missing series will be available in the spring, but.... the official release date is now August 25, 2009. Sorry! Simon & Schuster wanted to bring Found out in paperback before releasing Sent, so that pushed the date back. I feel a little guilty now for ending Found on such a cliffhanger. But I hope you will feel that Sent is worth the wait.