Got the update last week and was happy to find my Netflix "connection" issue has been resolved, for now at least. It hadn't worked in a month even with all connection tests successful and the Netflix integration reset. Hopefully it works for good now!
I'm seeing that now that when I bring up Netflix my 4K TV switches to 4K UHD for the whole session no matter what the programming is, and no switching back and forth. As wisely said: "Hopefully it works for good now!".