On Tue, Jul 11, 2017, at 12:28 PM, Dusty Mabe wrote:
We will try to release blogs and documentation over the next few weeks
to show you new features and guide how to upgrade your existing hosts.
We have this wiki page for the latter, I've updated it now:
https://fedoraproject.org/wiki/Atomic_Host_upgrade
I also sent a mail to get this linked from
https://fedoramagazine.org/upgrading-fedora-25-fedora-26/