We know Jeff Bezos & Co. have some sort of intriguing announcement planned for next week, but while we wait for that to take place, you might want to update your iOS-friendly Kindle application. Amazon just pushed out version 3.2 of the reading app and it's loaded with a slew of new features, including adjustable margins for your "preferred reading experience," rapid highlights to let users mark passages within their content, as well as improved brightne
