I'm Not Sure
the new purple book is coming out November 9, 2010 and the title is :the ugly truth"
diary of a wimoy kid there is 5 books in the seires the origanal diary of a wimpy kid,diary of a wimpy kid rodrick rules,the do it your self diary of a wimpy kid(it is just a book for fun that you write in like it is your diary for a wimpy kid)diary of a wimpy kid the last straw ,and diary of a wimpy kid dog days(the newest and best i just finshed the other day so funny)