As Samsung released One UI 2.0 with android 10 for M30s. But samsung has removed and added some of the features to android 10.
Removed features
Motion wallpaper
Flash in 48MP camera mode
Video in ultra wide camera
Added features
Battery percentage display when the screen is off.
Navigation gestures-You can enable it in settings or in notification toggle.
Icons shapes -- To enable it you need to enable developer settings.
How to enable developer settings
Settings->About phone->Software information->Build number Tap on build number for 7-8 times there you can see developer settings enabled.
Now go back to settings and developer options and at the bottom you can see Icon shape change as per your wish and restart the device to apply the changes.
