Nokia Champagne running Windows phone 7.10 Tango leaked from ATT

Nokia Champagne was leaked earlier today. It was said to run Windows Phone Tango the next iteration of Windows phone OS. Thanks to Scott we managed to get some details about the device. It is now confirmed that Nokia Champagne runs OS version 7.10.8711 which is a build of Tango as confirmed by imWP7 app screenshot.

As  you may have already noticed, the phone was being tested on AT&T network. According to thelatest rumors Nokia is reportedly going to launch Lumia 800 in US on ATT 4G network in 2012.