Just installed it, the comments on fixes from Garmin are:
- Added AVRCP capability to NAV IV
- Fixed an error with the connection to the iPhone 4S
- Fixed a communication problem with LIN mounts
The one I don't get is AVRCP, it's the bluetooth Audio/Video Remote Control Profile, don't know what it would be used for. I'm also curious about the LIN bus update, so I'm anxious to try it.