They used to allow downloads of all books, which you could then rip the DRM from, but they got rid of that last year. Huge disappointment, and is why I don't buy books on Kindle anymore.
It's an enjoyable read, hopefully it's the start of a whole new arc in the series with more to come. My only real complaint is it's short and I want more. If you never read his other Interdependency series, it's also great.