Upgrade Path from SharePoint 2010 Beta/RC to RTM is Blocked
In the installation notice of SharePoint 2010 public beta, it was mentioned that:
“This beta is not supported and you CANNOT upgrade the installation to RTM when it’s released.”
It was later clarified in more detail in a TechNet blog article by Steve Chen. The upgrade paths and the content database attach methods from pre-RTM to RTM will be prevented by technical means. Apparently Microsoft…