I drove about 400 miles yesterday, the first long drive after the most recent update. I had done an even longer drive a few days before the most recent update.
Yesterday, I constantly had cold feet. Ice cold feet. It was uncomfortable.
The previous drive (before the udate) as in colder weather (little over freezing temps), and I did not once notice cold feet.
So, my conclusion is that the most recent update must have changed how the HVAC distributes warm air.
Or I'm crazy. One of the two.