I've just visited the page again (https://learn.microsoft.com/en-us/windows/client-management/mdm/policy-csp-admx-wcm) and previously in mentioned it was only for insider preview release.
There is no reference/mention of this now being "insider preview only" in the article. Do I assume this is now for the general release of win 10?
We're currently deploying 20h2 enterprise.