I purchased LR 6 as a stand alone in June, 2015 - I didn't purchase through Creative Cloud membership. When I select Help - Updates, it tells me that my LR is up to date even though it's still version 6.0 and the current version, to my understanding, is 6.9
Thanks for the suggestion - I downloaded LR6 as you recommended and went back to help -> update and the option for updating to LR6.9 appeared. The update worked. I noticed that since I updated to 6.9, version 6.10 has become available. As before, the option to upgrade to 6.10 does not appear. Am I missing something in my preference selections?