I think this is most likely to be Nokia N8-01 which may appear and officially announced during Nokia World in Sept. It might not be the Cseries member since the letters "C0" also appears on Nokia N8-00 prototype as well.
The screen looks bigger than 3.5" and also the resolution seems more than nHD..
Still symbian 3 they really really need to move on....hardware is good was good since the start of touch screen nokia fones they need killer software to make it a complete package
Not N9 >>>>>>