If I install opemadriva rock 6.0 beta now, will it automatically be updated to the official version or do I need to take any steps to do so?
It is using 6.0 repositories so it will be 6.0 unless you change the repositories. After official release, when rock repos wlll be symlinked to 6.0 you may want to switch repos to rock.
Currently rock repos are still symlinked to 5.0 as far as I know.
Thanks