All slingshot boards for '09 have the following changes (that i can tell from just reading and watching vids):
* dura base
* different side-wall material: HDLW (High Density Light Weight) PVC rails and tips - Extremely impact resistant and tunable.
*additional inserts for wider stance options
* Tapered/rounded rails vs the squared off ones before. this should make the ride smoother and more responsive
Notice, especially the rail close to the tip and tail (emphasized by the pink marks on the pic) Before, the curve of the rail was pushed/curved in toward the center on the tips and tails, now it gos to the corners. ON ALL BOARDS
The recoil's tip and tail shape changed as well. the corners are squared off and not so rounded