The advent of online publishing and eReaders has certainly changed how and when books come available. Even a few years ago, this book would not have been possible so soon after the event it concerns. However, the technical ability to produce and distribute a book quickly does not necessarily lend to, and may even detract from, it's overall quality.
This is a collection of several essays by important thinkers in the defense and foreign policy communities. Overall, they do a good job puttin al Qaeda in perspective and generally focus on the continued need for engagement in the Muslim world, but also on opportunities for a change in long term priorites in Afghanistan. Several of the articles are quite good. Hoverer, others are much less academic and perhaps a little too much based on peresonal accomplishments for my taste. Overall, there is no clear organizing principle or theme.
If you keep up with the sites and articles in the milblog community and places like Foreign Policy, not much here will be anything new. If on the other hand, you have not been following Afghanistan and al Qaeda for several years, this will be a good primer, though I imagine it will be fairly perishable. At $1.99, I'd say it's a good value, but it will by no means be last word on the subject.