Some people may have seen this video before - it was created on one of the concept handsets on show at the recent Smartphone Show.  

However, we were all told that we couldn't copy this video, so cudos to Anina.net, who somehow managed to obtain a copy of the file. Also liberated from Motorola's over-protective representatives, was this new photo of a real Z10 prototype, with the redesigned back / cancel key clearly shown.