It does indeed look very real, good job. One thing that bugs me though is the fingerprints on screen. They look great, but you are missing swipes. If you ever do another of these, consider adding swipe-smudges and it will seal the deal
Well... you cannot blame wmpoweruser for confusing this rendering with a leaked picture because, man, this looks sooo realistic. For two minutes or so I also thought this was real. ) Nokia and Microsoft should pay you.