The latest upgrade to the iPhone and iPad version of Amazon's Kindle reading app brings a bunch of new features aimed at blind and visually impaired users. At the top of the list is the ability to read aloud 1.8 million Kindle Store titles, with help from Apple's VoiceOver technology. The update also brings better library and book navigation and search, as well as features like notes, highlights, bookmarks, font size, background color and brightness. Standard Kindle features like X-Ray, End Actions and sharing via Facebook and Twitter are also made more accessible through the update. Amazon's promised a similar update for non-iOS versions of the app at some point in the future -- in the meantime, a full list of new features can be found in a press release af
