The Nook and Nook Color will go on sale at Radio Shack on October 3.
Kindle With Special Offers users will soon be able to buy Groupon-like local deals.
Amazon's "Netflix for E-Books" lending program is still a rumor, and not popular with book publishers, but here are some ways it could work.
Amazon is reportedly in talks with book publishers to offer Amazon Prime customers unlimited access to a digital-book library featuring older titles for a flat monthly fee.
With a competitive price and Amazon's wealth of content, the new device could put a dent in other manufacturers' tablet sales -- maybe even Apple's.
Walmart also attempts to buck Apple with the launch of its new Vudu web app independently of the App Store.
Amazon recently removed the Kindle Store button from its iOS app to avoid sharing revenue with Apple, and now it is circumventing Apple even more with the introduction of a Web-based Kindle app.