AT&T today announced that it will begin selling Amazon’s Kindle 3G eReaders in AT&T retail stores nationwide beginning March 6. The Kindle gets its connectivity from AT&T’s 3G broadband network.

AT&T will include Kindle 3G in its connected devices displays throughout AT&T company-owned stores, offering customers the opportunity to test drive the device onsite.

“As the first dedicated eReader offered in our stores, we are confident the Kindle will be an attractive addition to our in store connected devices lineup,” said Glenn Lurie, president, emerging devices, AT&T.

The new Kindle 3G, which sells for $189, boasts a 6-inch Pearl E Ink display, storage of up to 3,500 books, up to one full month of battery life with the wireless off and no monthly wireless fees or annual contracts.

Kindle 3G, which connects over Wi-Fi as well as AT&T’s mobile broadband network, wirelessly downloads books, magazines, newspapers, blogs and personal documents to a 6-inch, high-resolution electronic paper display that looks and reads like real paper.

AT&T added 2 million connected device subscriptions in the fourth quarter of 2010 (including computing devices like tablets and laptops), bringing AT&T’s connected device total to 11 million.