Purchased a 2012 Touring with the Bose package. IPhone IOS5 Bluetooth streaming works fine, but no song info in the display, which, according to the manual, it should show this info. Did a comparison with our friend's 2010 CX-9 which displays the song data, we also notice that the rear view camera shows reference lines on the display to assist in backing up. Our car doesn't have these lines, nor are they included in the manual as a feature.
This definitely indicates some sort of firmware delta between the 2010 and 2012 CX-9s for the information display.
Definitely not a problem with the IPhone since my phone displayed the song data in their car and their phone did not show the data in my car.
Spoke with the dealer about this. According to them, in mid 2011 after the Japan Tsunami, any new CX-9s did not have the rear view reference lines. I have a feeling that Mazda changed suppliers and the new suppliers did not implement (or partially implemented) the AVRCP 1.3 BT protocol.
Since our manual indicates that our car should support the BT song info on the display, I've raised the issue with Mazda Customer Care who is working with our dealer to identify the issue. I should also mention that the Service Mgr at our dealer is working with the company that maintains the Mazda audio units to figure out what's going on. I'm getting calls every few hours from both the Service Mgr and CC asking questions to help in their investigation, so Ii know their working on it.
I also contacted Mazda's NA Operations, Office of the President, about this issue and their are also aware of it.