Here's the new "Big Sur":
As you can see, the dock is the same but the user interface elements in everything else is more spacious. I tried setting the screen resolution to the next sharp option and it was too small.
I like the new look. It is more consistent with iOS. I do like using small laptops though and I hope there's a way to scale back the size of elements a bit.
Both iOS 14 and macOS 11 betas seem much more stable than the versions released at this stage last year. Happily my apps work fine and even build for Apple Silicon without any obvious issues.
Update: my mistake, Catalina was scaled.
I didn't realise that I had my Catalina OS set for scaling to show more. When I tried scaled options under Big Sur they all look more blurry than what I see with Catalina. (You'll need to click on these to enlarge them).