Great stats. Thanks for looking this up. I can understand why later in the OS life the time in between updates would be longer but from .2 to .3 you'd hope that it is shorter or at least that the .2 release is very stable. Whats strange about this one is how many betas and how long it's been listed as no known issues. These factors have made the time seem longer in my mind.
On a side note I just realized how much more posting I have been doing in these forums lately than usual. It is because I'm holding off on my work projects until 10.8.3 is released for a clean install from 10.7.5. I thought it would be released weeks ago so in preparation I moved everything over to an external HD - things are kind of in limbo for me. I hope it is ready soon.
I never usually anticipate for a Mac OS X update, but i need to do a clean install, and i refuse to do it now when the update can be released any time. I'd rather do it clean.