Curious about this as well. My impatience got the best of me last night so I did a time machine backup and then went ahead and installed. But of course I have this stupid feedback assistant installed now. Hopefully the last GM update will actually be the official version.Also wanting to know this.
I want to do a clean install now with this GM, but if this does not auto update to the final version (if this release now ain't it), then i might wait . . .