I'm having the same issue. When I unzip the folder it says its version 2.0.5. Then I go ahead and place it in my WoW>interface>add-on folder and it doesn't up-date the add-on. It is placed in the correct folder. I'm not sure what the issue is.

edit: Fixed my issue. Apparently I was putting it in my PTR folder. Perhaps that is his issue as well. Sorry for the confusion. (: