Ready for another rousing game of "What's that mystery phone?" Today a Nokia device going by the name "Champagne" was spotted in the logs of an app called "I'm a WP7," and what's more, the handset was reportedly sporting version 7.10.8711 of Windows Phone. That's thought to be the build of the OS dubbed "Tango," which is rumored to be an update that's going to help bridge the gap between Windows Phone 7.5 Mango and Apollo, the next major version of Windows Phone.

Outside of those scant few details, there's not much known about the Champagne and when (or if) it'll make its way Stateside. Earlier today we heard a rumor that Nokia may be planning to unveil some of its U.S.-bound Windows Phones at CES in January, though, so it's possible that we'll see the Champagne uncorked there. Keep your browser locked to PhoneDog for more!

Via WPCentral