This is actually one of the things where I wish that the forum software had a 'me too' button. So the first person who gets an upgrade notification posts "wheeeee I got the upgrade notification" - everyone else clicks 'me too'. Then the first person who finishes the install posts "OMG!!! It's .173!!! And nothing changed in the Release Notes!!!" and again everyone else just clicks 'me too'. And then someone posts "I haven't gotten it, yet! I don't understand how they roll this out" and then... whom am I kidding, everyone else also posts that they haven't gotten it yet and how frustrating this is...
Oh, and the cool thing about this? You'd get a count of the 'me too's and could get a better handle on how many in the self selected sample of people following this thread really got it. While some people may have enough common sense not to post every new release they get, I'm sure a fair number would indeed click 'me too'