They make scrolling with the touchpad a lot easier.

Touchpad gets smarter: New gesture options offer adjustable scroll and zoom speed, automatic scrolling, and accelerated navigation for precision touchpads. File Explorer improvements: Enhancements ...

Speaking of the Experimental (Dev) build, this one adds several new gesture-related features for precision touchpads inside Settings. You can now control scroll and zoom gesture speed, while a new ...

Microsoft has released new Windows builds under the Experimental and Beta channels. They bring improvements and fixes.