Originally Posted by symbology
You're probably right, not all features are working in the beta, but it could also be written for hardware for the next iteration (ie, not working on 4S or earlier). Although, I'm not sure if you need specialized hardware for Bluetooth MAP.
The MAP protocol is coded into said OS. I am sure it just requires Bluetooth 2.0 capable Hardware.
I have an HTC Inspire 4G (HTC Ace) that never had MAP in the first place. But when I had put CM7 on it, it did. It would send messages to my touchpad and everything except for my Sync. All it took was for on of the contributors to take the time and add it in. Now I have put iOS 6 on my iPhone 4S, but it still doesn't recognize it.