-Checked for updates, saw there was one and downloaded it in the background.
-When I shut down I had the option to "Update and Shut Down" which I took.
-When I rebooted the next day it said...

A little concerned. I set mine to update last night, downloaded in the background. Don't know how long it took, wasn't paying attention. Shut down, left it to update. Booted it up today, just had a...