"Although I've enjoyed writing it every bit as much, my next book will be very different to the Harry Potter series, which has been published so brilliantly by Bloomsbury and my other publishers around the world," Rowling said in a statement released by Little, Brown. "The freedom to explore new territory is a gift that Harry's success has brought me, and with that new territory it seemed a logical progression to have a new publisher. I am delighted to have a second publishing home in Little, Brown, and a publishing team that will be a great partner in this new phase of my writing life."Rowling has quite a bit to live up to, so I'm sure there will be plenty disappointed no matter what happens.
EDIT: Here's a video from Newsy on "The New Book," which explains how there's nothing really explained with some fan reaction: