In a bit of news that's not exactly children's-publishing-specific, but which is certainly related, Rowling announced that her new adult book, titled The Casual Vacancy, will be released on September 27th.
J.K. Rowling's New Book "The Casual Vacancy" Out 27th September 2012
Rowling also re-released her website, which features a timeline about her life, Harry Potter, and this new book.
www.jkrowling.com (Country-specific sites are linked to within.)
