One of the Nokia R&D’s Senior graphic designer has done some Windows Phone UI designs. Pocketnow today posted some of them and my first impression is that thisÂ must beÂ purely a personal concept design. And its important to remember that even though Nokia can alter the Windows Phone UI, they had repeatedly told us that they will never make the developers job tough by changing the core UI of the OS. You can find some more images at the source link and post your comments on the above UI below.
Update: Nokia just informed me that this is not a property of Nokia and the designer no longer works for Nokia. I think this info should make all of you more happy!