Two observations with this build:
1) I think that the sound quality in the music app has changed, at least over Bluetooth. It sounds more muffled and compressed, for both locally stored and streamed music. I notice this easily, since I tend to listed to the same playlist. I checked the EQ settings, etc. Nothing has changed.
The sound quality did in fact change. I was listening to podcasts on the way home today and it sounded a bit "tinny" like the audio bands were more narrow. It was especially noticeable with just vocals. I also find the notification/system volume is a bit lower than it was before the update.
I had a 30 minute commute home today and had no disconnects. Still too early to tell if the BT issues are fixed though. Although, I'd take them over reduced audio quality.