When does the 4th book of the Blue Blood series, "The Van Allen Legacy"

Question: When does the 4th book of the Blue Blood series, "The Van Allen Legacy" come out!. !?
Best Answer - Chosen by Asker:

Book Four: The Van Alen Legacy!. I hope it will be out soon but I wouldn't expect it for 6 months to a year!. There haven't been any dates announced yet!. Wikipedia says 2009 and by the dates on the other books It looks like one book a year for this series!.Www@QuestionHome@Com

the fourth one was soo good i hope soonWww@QuestionHome@Com