How to upgrade from 7.4 beta to GA

If I understand correctly we now have a GA release of RHEL for AArch64. WIth the beta I had to copy the repo from the install DVD image to disk and set it up as a custom repo, this being necessary so I can install packages post-install.

How do I now update to the GA release? Are there on line repos now? If yes can I enable them and just do a "sudo yum update"?

Regards
Bill Somerville.