You can get it on devices without UDID activation. I feel sorry for anyone who paid for it.
> Install fresh iOS 5.X.X > Activate
> Download iOS 6.0 IPSW
> Click OPTION/ALT + Check for Update (OSX) in iTunes (Not Restore).
> Browse IPSW
> Restore > Leave > YeY!
Can you revert to 5.1.1 if you don't like it?