perhaps this book is the second attempt. Remember the movie they were going to make and release right before the election? Remember how much criticism they got? Obviously it was too obviously targeted to give a flattering portrait of the administration, so they needed something similar but deniable this time.
maybe they just want to boost sales as a farewell favor to this guy.
maybe they already broke in and read the manuscript but none of the spooks are telling anybody because it wont matter, theres nothing classified in it so let the suits freak out for a bit.
Ask Sibel Edmonds.
First detail I've seen concerns the contradiction between the book's account of the assassination of Osama bin Laden and the official one. Thus the controversy and debate becomes the official version of the event vs. the official version of the event, rather than concerning itself with the existence of any such event at all.