I got mine yesterday as well. Everything is working very well and super smooth overall. Seems even snappier than it was (not that it's been even slightly sluggish more than 3 times since release date), but I think that's mostly the new animations.
You have convinced me to finally install it.
Edit: I'm looking through the settings menu and there's a number of changes which includes:
-Finally making apps only use location while using the app, always using it, or denied usage
-You can temporarily mute your phone for a period of time
-Notifications will now allow you to snooze them
-Night mode has been renamed to dark mode (I think so?)
-There's a permission manager in privacy settings
-Incoming calls while using the phone are smaller now and can be moved around the screen (haven't tried this, but it's in the "What's New" menu)
-Link to Windows is a thing
-Device care has a new look
Other things will be shared or pointed out hopefully. I do hope that the GPS is improved.