This one is really nerdy, but it would be cool if in the “About Google Chrome” page of the browser, a list of whats new or what’s changed showed up right after the version number.

This could be restricted it to only if the user was on the dev/beta channel. I figure if you’re on dev/beta, you care about that kind of information.

Even cooler would be a list of all the versions that you previously used, that folded out on click, so you could see your own specific upgrade path (along with their changelogs)