Advance Warning of Possible Bombshell Detonation, see above.
This book apparently completely overturns the historical asssumption that Islam and the Koran had a clear cut and well documented birth. Apparently according to this book, nothing was actually written down till 200 years after the event, and the Islamics have doctored it continually ever since then. The definitive version of the Koran apparently dates only from a 1924 Cairo edition! Salman Rushdie and the Danish cartoonists don't come close to the impact this may have.
Just how the Shia in particular react to all this remains to be seen.