This seems to be a hard one for Aerohive to fix themselves, but thanks to some good oldfashioned logical thinking, i was able to find the release notes by taking the 6.5r10 link and changing it to 6.5r11, so here it is:
http://docs.aerohive.com/330000/docs/help/english/documentation/6.5r11_HiveOS_ReleaseNotes.pdf
