Microsoft and Nokia today announced that the Lumia 800 Windows Phone is available for sale at select Microsoft retail stores to those wishing to purchase it. The Lumia 800 is being sold as part of a promotion bundle, which includes the Nokia Purity HD Stereo Headset by Monster, the Nokia Luna Bluetooth Headset and the Nokia Play 360 speaker. THe Lumia 800 included in the bundle has ben optimized for AT&T's 3G network in the U.S., and is being offered unlocked. The retail price of the bundle is $899.