I couldn't use the site search to tell me whether this was already proposed (all the terms were too frequent to be searched), so I apologize if this is already proposed:
Could there be a box on the download page (perhaps under the donate section) that shows the last version to support whatever — WinXP, Vista, whatever Office version? The version numbers of OU don't seem to correspond to this, &, unless such depreciation happened in the last few versions, it's tough to find.
I'm using this to make sure old Win VM images are up-to-date.