My point was that the info is often added to the help file (and quickly, I might add): but unless we, as users, are regularly re-reading the help file with virtually every point release (which I know isn't going to happen), the new features/tweaks/fixes will be undiscovered for long periods of time. I suppose the best we can do for now is to peruse the beginning of that help file as often as possible to look for the highlights, as I think we can all agree that the release notes are rather light on detail, and generally don't change at all across an entire series of so called "minor" point releases (final digit change only), yet I know of several cases where fairly significant changes were made in those.
Or, I can try to start saving every help file (with the release number attached), and run them through software that will highlight the differences. Which is what my original post was about....I thought I remembered seeing that already done on this site.