I am still on PB2 and holding. This morning I had the issue where both my Garmin watch and Plantronics headphones disconnected at the same time. I look over at the phone and the bluetooth icon is flashing. About 10 seconds later they both reconnect. I have submitted this via the Feedback app.
Still debating PB3 on an iPhone 6s.
Still debating PB3 on an iPhone 6s.