Amazon is rectifying the long wait for a Kindle for Android update today with a version 4.0 refresh that carries with it a major UI redesign. The library view looks very different: instead of a basic grid, recently read items are presented in a rotating carousel at the top of the home screen, while the navigation panel has been expanded to provide quicker access to books, documents and periodicals. The actual reading pane remains untouched, so whether you're using a smartphone or a tablet, your e-copy of War and Peace should still look the same. To have a peek at the Kindle app makeover, Android users can go ahead and download the new version from the source.