Early this morning, Barnes and Noble released Nook updates for iPhone, iPad, and PC versions of the App. The applications have been completely revamped to include features like themes, day/night content options, line spacing, font styles, preferred justification, previews, and more. Best of all, the iPhone 4 version now adds hi-res images for the Retina display.
Barnes and Noble pushed its Nook app live to Android today, so mobile users that have decided to stick with Google can now choose between Amazon's Kindle app and B&N for their reading-on-the-go endeavors. Additionally, iOS device owners have also been given a little treat through the Nook app.