And already, Amazon has the unnamed book on order in a variety of formats - paperback, hardcover, audio and large print. No word on what the book is, although HarperCollins must be over the moon to have that instant sales burst as well as any opportunity to distract the publishing world from all things O.J. Simpson. And perhaps the hardcover edition may be a clue that the book is a fairly recent release - or perhaps Amazon is merely hedging its bets in all available formats...