Upgraded to the April 2020 software a while ago now. (ST.PSEV.KR.E541.200401)
Only just noticed one interesting change.
The reversing camera screen has a settings icon in the top right.
When you click it you see this.
The bug with the UVO advert at startup has not been fixed.
One of the the cars shows this every time it starts.
This advert appears at every startup - after the 'lawyerse babble' screen.
Clicking 'Later' clears the advert, but it appears again at next startup.
The other shows this once every 30 days.
Another change that I just noticed. I don't know when it happened. The Navigation Settings page has been rearranged.
For example I wrote back in Jan 2017 from the Setup / Navigation Page / Address Book Tab you can now Import and Export Address Books.
This has been changed to Setup / Navigation Settings / Others / User Data
One screen seems to have disappeared entirely. Originally my car had a driving info screen under the UVO settings.
Then from about August 2019 this screen button moved to the All Menus page.
Now I can no longer find this screen. I always prefer having more data shown by the car.
It's annoying to lose functionality.