Check this out. This is a Nokia phone with an unknown model number. Based on the picture, it is sporting the new Windows Phone main menu. However, if you look closer, you will see the old Windows Phone logo.
So, will this be a prototype for future Windows Phone 8 device from Nokia Lumia range or is this just an old prototype that is running on Windows Phone 7.8. There is no answer to these questions but I am sure that we will see more leaks.