T-Mobile and Nokia are currently sending out invitations for a media event on December 14th. They apparently have “something exciting in the works,” and we assume it has to do with Microsoft’s Windows Phone platform. The event invite certainly looks Metro-ish with the variously sized and colored tiles present. Could T-Mobile be the first US carrier to adopt one of Nokia’s Lumia Windows Phones? Tune in next Wednesday at 7PM to find out!