Just updated my iPhone 4S to iOS 6 and realized that now I have "Tracks" & "Browse" buttons while my iPhone connected over Bluetooth as audio player: Confirmed with my old iPhone 3GS which is running iOS 5.1.1:
BTW, yesterday did my first 5K maintenance and complained a lot about iPhone & Prius Two issues. They definitely out of track in Toyota. Technician told me: that car wasn't designed for a phone. It was designed for an iPod. Can somebody tell me: who's going to use iPod nowadays? Almost everybody have a modern smartphone in their pocket and want to use it with a car. Another finding: firmware for audio unit in Prius v Two isn't upgradable at all! If client complain about issues they will remove entire audio head and send it back to factory.
I send my complain on Audio to Toyota by mail and they called me back today (10-day turnaround time). Toyota's lady insisted that there should be an option to disconnect an audio player only for Bluetooth. So, I jumped to my car and confirmed with her that there is no such option at all. After being on hold for ~15 minutes she finally said that there is no any way to disconnect only audio on Prius v Two without disconnecting phone by itself over Bluetooth. Please write them in mail — it's better to explain your failures in writing rather than over the phone. My complain was 2 pages long.