I'm not sure how accurate this is, but REI's website says the following about the Wall:
-True twin-tip construction has fully symmetric sidecut to give riding switch the same carving characteristics as riding forward
-Vertical sidewalls and torsion box design provide excellent grip, stability and sensitivity
-Dense wood underfoot provides excellent screw retention; soft poplar wood in the remainder of the ski creates snappy responsiveness
-Soft-flexing Butter Zones in the tip and tail of ski allow smooth and controlled nose and tail presses
-Dimension-3 sidecut, designed to optimize the ski's flexed shape, contacts snow with an even pressure that yields incredibly smooth turns
-Armed Edge system anchors the edges to the ski via functional Völkl logos that increase strength, resist pull-out and up the cool factor
-Edgy graphics add appeal
http://www.rei.com/product/774403
If it is accurate, that sure sounds different to me... I don't recall anything about butter zones on the 08. Plus I think the armed edge is different. Dimensions are definitely the same I guess.