Good news: A new Sarah Dessen book.
Bad news: it's not due out until next May.
From PW (via Sarah Dessen's tumblr):
The Best After Ever, which will be released in May 2013. Set in the fictional beach town of Colby, where several of Dessen’s novels take place, it features 18-year-old Emmeline, who is spending her last summer before college working for her family’s vacation rental business and enjoying a summer romance with a young aspiring filmmaker.