We haven't heard much about Sony's ultra slim VAIO Z in months, but when we have, we've always been left with more questions than answers. We've seen its specs (but not handsome face) splashed on various European websites, while Sony, for its part, has only made the coy promise that its newly redesigned S series thin-and-lights are not meant to replace the more premium Z line. Lo and behold, we're now seeing photos of wh