Nvidia released an update to their drivers which now turns them to version 332.21.
The install has since a few releases back been able to install and update drivers on the new Retina MacBook Pro computers out of the box, which make the previous problems with not recognizing the hardware a non-issue.
I have just done a test install on my machine and this release worked like a charm.
You can read more about the previous issues with drivers and rMBP here.
You can download the drivers from Nvidia here.