From what I can determine, the default display profile is going to change to gamma 2.2 with the shipping of OS X 10.6 Snow Leopard.

So all you Rendo Mac users out there... switch your display profile to gamma 2.2. You know it makes sense, or the men in black wouldn't be doing it!

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)