Amazon lights a Fire with its Kindle tablet (photos)

Amazon CEO Jeff Bezos unveiled four new Kindle devices in New York this morning. Three of them are e-readers and one is the company's first foray into the tablet market.

The new Kindle Touch, which comes in Wi-Fi-only and Wi-Fi/3G versions, features X-Ray search that allows readers to research terms in books.

Bezos' biggest announcement was the $199 Kindle Fire, a 7-inch Android-based tablet designed to undercut Apple's iPad.

Bezos showed off his mediocre Fruit Ninja skills on the Kindle Fire.

Bezos described the Kindle Fire's display as "beautiful." The LCD touch screen offers 16 million colors and 169 pixels per inch.

The Kindle Fire will stream music, of course, and offer songs and albums through Amazon MP3.

The Kindle Fire incorporates Amazon's new Silk browser, which offers split browsing through the Amazon Web Services Cloud. This means the software will learn your reading/surfing habits and cache pages you return to frequently. Amazon describes it as "cloud-accelerated" browsing.

The Fire's combination of features and a rock-bottom price is designed to attract "many millions" of buyers, Bezos said.

The new $79 Kindle is a 6-inch E Ink e-reader with Wi-Fi. It weighs 5.98 ounces and is designed to fit in a pocket. The device was released today.

The 6-inch Kindle Touch is an E Ink e-reader with no buttons on the front, a multi-touch screen, and a speaker for audio books. The Wi-Fi-only version costs $99. The Wi-Fi/3G version costs $149 and offers a free 3G connection. Both e-readers will be released November 21.

The 7-inch Kindle Fire, set for release on November 15, will offer access to books, games, movies, TV shows, music, and Amazon's App Store. It will offer Wi-Fi, free Amazon Cloud storage, and Amazon's new Silk browser. Amazon Prime members can access unlimited, instant streaming of over 10,000 movies and TV shows.