Heads up. Just had a bit of a tug of war with the app during final stages of install, just before, and during the reboot.
Car decided that, even though it was on a scheduled charge, it was going to start charging. I got tipped off by app notifying me of charge starting. Even before the reboot, I could stop charge in app, but a few seconds later, it would start charging again. Confirmed by standing next to smart meter. The app then said that car was rebooting, and still charging. Even setting charge limit to < current SoC it would not stop.
Not the end of the world as in the end I could physically go out to the car and try and stop it then, but may not be so helpful for those that do update and are not close to the car. Never ever had this before in nearly 70 updates.