1. We can see some major camera improvement as we saw later in one ui 2.1 last year but this time one ui 3.1 can give use new features like Director's View etc. These Features are going to be much better
2. We can also expect a new display feature called as Eye Comfort Shield - This Feature allows you to add or remove blue, red, green color from your screen, This Feature can reply blue light filter.
3. It's Confirmed that Samsung this year is going to add Google's discover feed on One-Ui Home, According to a leak Google Discover feature will be available in all Galaxy S21 Units.
4. We can also expect some new type of pull down gestures, That allows you to total settings very easily.
5. New and better icons customization features, that allow to customize the icon into different shapes and color.
6. A new feature to enhance Performance and battery improvement is also coming in one ui 3.1.
7.New themes are also coming in notification light section which we miss in the one-ui 3.0