You're gonna be bothered by how cool I am.

http://www.amazon.com/Harry-History-Wizard-Inside-Phenomenon/dp/1416554955

Melissa got a book deal to write about the HP fandom phenomenon. It's called Harry, a History, and it comes out November 4. JKR gave another interview for this book, and she also wrote a foreward for it. Here's a snippet of the foreward:

At long last I understand what was going on while I was holed up writing, trying to filter my exposure to Potter-hysteria...a great chunk of my own life has been explained to me. Melissa has filled in an enormous number of blanks. Reading the book you now have in your hands has been an astonishing experience for me. It is as though I have, at last, achieved the ambition I held for years: To go along to a bookshop at midnight on Harry Potter publication night, in disguise, and simply watch and listen.