Is this a Nokia Windows Phone model running Windows Phone 8? Though, it doesn't add up for the very fact that the Windows Logo on this still looks old. A new leak shows off the front glass of what it seems to be one of Nokia's forthcoming Windows Phone 8 models.
The design here is a whole lot less boxy than the Lumia 800 or 900, and this one measures 4.3 inches. It could also mean that there could be 720p support for this.