Been wondering also. If the beta updates is the same the official ones, then why beta updates have 6.0.6000.165xx whereas official updates have 6.0.6000.206xx (as per KB article)?
I uninstalled beta/leaked updates and reinstalled the official one. Still mine shows 6.0.6000.165xx. Could some one confirm what their version number (I mean the ones who installed official packs only)?