I have seen that section in the help, but it isn't all that useful since it isn't updated in time with the major releases, and is often incomplete.
For example, when 12.3 was released, I checked to see what was new, but there was no section for 12.3. For 12.3 Update 1, there are now 6 features listed for 12.3, but not all of the new features are included, and there is no mention of any bug fixes (I know there was at least 1). I would rather see something like this that lists all new features, improved features, and fixes, for every update, major and minor:
http://www.getpaint.net/roadmap.html
I imagine something like this would not be too difficult to generate since you already log all changes on your
internal web page.
It's not a big deal, but would be a nice feature and would help your customers have more confidence in your software.