BTW - that video is 10 min of pretty much nothing. He gets some messages about an update - faffs about for a bit - does the update (he has to go away for 70 min) comes back AND.... not alot has changed
Nice to know what happens etc.. and if you've got the time to spare etc..
A member of the UK group on Facebook had the first smaller update on his a couple of days ago - he is a First Mover and put his name forward to be one of the initial customers to try out the process.
The first sign that something is happening is when you front assist systems report warnings (only the first OTA update should have this behaviour apparently, one of the things the update does is stop this happening in future), then you get the option to install when you next get to the "goodbye" screen as long as your state of charge is above 50% and your car is not plugged in at the time.