Protocol Bluetooth AVRCP ?

PASS220174 wrote:
Does anybody know when it will work on IPHONE 3G / 3GS ?

No, only Apple knows.

Does anybody know if any dongle work with IPHONE allowing _next/previous music tracks controls_ ?

No, only Apple knows.

The subject has been done to death before - use the search facility and most of your questions will be answered, but the short answer is that it doesn't and Apple don't publish their plans.

The iPhone 3G and 3GS support AVRCP _right now_, with some limitations (i.e. just pause/play/stop).

See: http://support.apple.com/kb/HT3647