Google seems to be taking a "website for the desktop" approach to the browser upgrades. If Google updates their homepage, the user gets the new version the next time they visit it. Ditto for their browser - the next time they start Chrome it's upgraded seamlessly without bothering the user with the details.
We take the same approach as Google Chrome with our suite of updater tools (http://wyday.com/wybuild/ for anyone interested). We've found it's lead to better input (less duplicate bug reports) and faster sales turnaround. We haven't done a definitive study of our customers' customers, it'd be interesting to see if they got the same results.
