Version 3.5 of the iOS Kindle app is now available and offers X-Ray, a feature that allows readers to learn more about certain characters, places, and phrases via Shelfari.com and Wikipedia.
Just tap on the center of any page to call up the feature in the reading toolbar, then click "X-Ray" to see all passages from the book that mention the same idea, person, or topic in question, plus detailed descriptions, where available.
The X-ray feature was added to Amazon's 2011 Kindle lineup, including the original Kindle Fire and the Kindle Touch eBook reader. It was also included in the more recently released Kindle Paperwhite, while the Kindle Fire HD includes X-ray for Movies, which lets users tap the screen for more details about the visible actors.
The new iOS app update includes manga image rendering improvements.
This update follows a summer which saw Amazon add support for children's books, comics, and graphic novels to the Kindle iOS and Android apps, providing access to more than 1,000 titles.
The Amazon Kindle iOS app is currently available for free in the Apple App Store.