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Kindle Touch is a new addition to Amazon's e-book reader family with a touch screen that makes it easier to turn pages, search, shop, and take notes - still with an e-ink display.

Amazon invented X-Ray, a new feature that lets customers explore the "bones of the book." With a single tap, readers can see all the passages across a book that mention ideas, fictional characters, historical figures, places or topics that interest them, as well as more detailed descriptions from Wikipedia and Shelfari, Amazon's community-powered encyclopedia for book lovers. Amazon built X-Ray using its expertise in language processing and machine learning, access to significant storage and computing resources with Amazon S3 and EC2, and a library of book and character information.

The new Kindle Touch is only US$99. Kindle Touch is available to customers in the US for pre-order starting today and will ship on November 21.

Kindle Touch 3G is a new addition to the Kindle family for readers who want the top of the line e-book readers, the vendor said. Kindle Touch 3G offers the same new design and features of Kindle Touch with the added convenience of free 3G.