Interesting quirk/glitch since receiving the Android 11 beta... the notification alert chime seems to 'stutter' as it's being played. It sounds quieter than it did previous to the update. I checked audio settings and they were set exactly the same as before.
I noticed that the update also reduced my screen brightness setting... not a big deal, but after experiencing the audio issue with the notification alert, I did check to see if other settings had been modified.
I haven't had time to extensively check out the OS in detail yet. I did notice that the Google Fi VoLTE indicator is now present on the status bar.
More updates as I find them.
Peace ✌️
