Well, I bit the bullet and made the update.
What a PITA! The overall process was simple, but my Windows 10 laptop was a POS. So I had to improvise to be able to both download the files and prepare the flash drive. Laptop has only 1 usb port, and that is where power is applied to the laptop.
Time to download and prepare the flash drive was about 2 hours. But that could be my internet connection and the flash drive write speed.
Inserting the flash drive into the vehicle, to requesting I remove it, was 26 minutes.
The interface does seem a little quicker, but not significantly.
The voice is slightly different.
Navigation now gives you 150 feet distance to make a turn, instead of 100 feet.
The navigation does have a distance countdown to the turn,which is nice, but you have to look at the screen to see it.
I am kinda "meh" on the new theme. Would like to be able to customize it. yes, there are four backgrounds to choose from, but they are not that different from one another.
Now has the ability to send analytics back to Ford. Whatever.
Carplay still needs a wired connection. Why not bluetooth or wifi?
Still need to investigate other changes and updates.