Amazon's Kindle app for iOS has just been updated to version 3.0, bringing support for the new iPad's Retina display, and a redesigned library that lets iPhone users see their content in a grid cover view instead of just a list of titles. The update also includes "cloud view," which allows users to see all of their cloud content in a single combined view by selecting the cloud tab at the bottom of the app interface — previously, users had to visit a sluggish online archive to download books. The update is available now in the App Store.