So, I managed to get "announce messages with Siri" working with my paired PowerBeats Pro. The toggle was there immediately after I upgraded and worked the first time I used my Beats this evening. Gotta say, that will be a nice feature when I am at the gym or something!
Also, my Native Mail app has been acting a little better today, Push sync seems to be better and notifications are more consistent. New iPhone 11 Pro Max for reference, came from 13.1.2
I am though having an issue updating my Apple Watch S4 from 6.0.1 to beta 2.. keeps getting stuck on Pause -- waiting for Wifi basically. Anyone else having this issue? deleted the profile, and rebooted both devices several times!