We've recently received an update to the Minecraft client on the Switch.  Now we are unable to connect to our Realm.
When attempting to connect we are met with:

"
Could not connect: Outdated server!
The Realm you are attempting to access is a different version. Contact the owner of the Realm to address the issue.
"

The Realm in question is a Realms Plus subscription.

Expectation:  The version of Minecraft pushed to client devices (like the Switch) is able to continue playing on Realms Plus subscriptions.