I have been playing around with it some.
Not as bad to me as some others have stated. Obvious slight lag when opening/closing apps.
I also read some others couldn’t touch the top of the screen to go to the very top anymore. That is working fine for me.
I did notice that when using reachability and then swiping down in the blank area, the Notification Center does not come down anymore like it did before. I have to swipe down from the very top.
I love the new AirPod features. Although they should’ve been there from the beginning of AirPods’ existence but whatever.