Slightly larger fuel tank
Different lift system, just like the Exmark now.
Throttle cable is different, but the 09 can be fixed, same thing with most of the frame changes
They are still using cables, and from what I am told the Exmark is having issues with the rods, but the part the goes between the cables and the pumps are built different, and from what I hear should be trouble free.
I think that cover the major changes.