Kontakt 2.2 Update is now available on the NI website. And it's FREE... well, that depends.
At first, I've read reports that the 2.2 Update will cost $29. But according to the email NI sent, if you're a PowerPC or Windows user, the update is free. You only need to pay the $29 or 29 Euro update fee if you'll be running it on an Intel Mac (Universal Binary).
So I downloaded K2.2 and it seems they also changed the registration and activation procedure. I had to re-activate my copy of Kontakt using their new "Service Center" program. This is a Flash program that runs on your desktop but communicates with the NI server. You can update your personal information, download updates and get technical support using this program.
Another score for the PIRATERS that makes life hard for legal owners of software.
And yes, the update was FREE for me since I'm using K2 with my old G5.
BTW, the look of the about box has also changed. You can purchase Kontakt 2 here