The hair and skin still kill it.
Mind you, the hair now only looks like "doll hair" or bad hairplugs as opposed to "obviously CG", but it's still way too regular to be real. Additionally, the skin is too regular to be anything but artificial (which we're all used to seeing now in any magazine photo thanks to airbrushes).
Admittedly, I am impressed with their ability to acheive magazine photo "realism". But we're still not up to the point of indistinguishable.
Mind you, I'll be afraid when we hit indistinguishable.