The documentation on Rolling Cluster Upgrades on docs.microsoft.com (https://docs.microsoft.com/en-us/windows-server/failover-clustering/cluster-operating-system-rolling-upgrade) have not been updated to include Windows 2019 yet. Will it be possible to perform a RCU from an n-2 Cluster Functional Level, or will this be restricted to n-1? If other words, can I go directly from Windows 2012 R2 to 2019, or is it only 2012 R2 to 2016 or 2016 to 2019?
Thank you
Tim Reid