Well, so far the only update is a defender definition.
They must stagger the automatic updates on Windows update? If I let my PC update automatically it almost always ends up being Patch Wednesday for me. That's when I see the do not shut down your PC message. If I check manually though on Tuesday it will update. Must be a time zone thing? Anyway, nothing new on MSDN yet. Still early in the day though.
Patches coming through now.