You mean that instead of having 2 links (“Download” + “Installation Notes”), you propose to have 3 (“Download” + “Installation Notes” + “Upgrade Notes”)?
Another idea is to add a link to the upgrade page in the “installation Notes” page. WDYT?
Actually, I click on “Installation notes” (1st click), “Administrator guide” in the breadcrumbs (2nd click), “Upgrade” (3rd click), then scroll down to " Upgrading the webapp".
This proposal would make me do just one click less + mentioning “upgrade” in a document targeted at “installation”, I don’t like that very much.
But I update our instance two to three times a year, so please wait for other opinions