I'll take a stab at this one, but I could be wrong.
I'm guessing the '06 has a lever to bring up and down the rudder, the new will have two T handles to bring it up and down. Much nicer.
The 06 will have two knobs to screw the mirage drive in place, the new will have a click and go system that's much faster.
The seats have changed.
That's all that I can think of off the top of my head. There could be more changes. But don't forget, even though the new features are nice, it's not like the old ones were garbage. There were some people on the forum who liked old seats better then new seats, and for others, although the click and go system is easier, people didn't mind the screw in knob system.
Most people really like the up down rudder controls, but its up to you if the new features are worth the money,
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