So, most of the work is already in master, for gnome-shell and gdm, so if you're run Fedora 18, this is what you'll get around Tuesday:
If you wanted to see the actual code changes, you could look at the git log for js/ui/unlockDialog.js and js/ui/screenShield.js, or commits with the tag ScreenShield. They're 43 here, so forgive me if I don't mention them explicitly.
However, this is what is waiting to be merged, spread around bugzilla (in particular 681143):
It's mostly similar, except for some minor issues that were promptly identified by the designers during the BOF session at GUADEC.
Wrapping up, I'd like to thank you my mentor, Marina, who has done a fantastic job of supporting me despite more important personal matters. I'd like to thank also the gdm and gnome-shell developer teams (in particular Ray and Jasper), as well as the whole design team, who is doing the best damage possible to the GNOME community. :D