Here's the reply from Rossignol:
Originally Posted by Rossignol customer service
Hi thanks for contacting Rossignol. We have redesigned the Axial binding for 05/06 and introduces the new Axial2. With radical changes in ski shapes with wider waists, shorter sizes and the progression of interface platforms, Rossignol has improved the binding to work more efficiently with modern ski design. The new Dual Action III toe piece has reinforced housing in the high stress areas, which improves the overall structural integrity. This reinforced housing has allowed Rossignol to strengthen the torsion bar interface, which facilitates greater torsional rigidity in the toe piece. The heelpiece has been redesigned to improve energy transfer to the ski. The lateral arms of the heelpiece are angled down to apply greater pressure to the edge of the ski. This creates more power going directly from the skier to the ski with less energy loss. The binding's forward pressure has been increased 30%, which dramatically enhances the interface between boot and binding. So....to answer your question yes, we have discontiniued the pivot binding. but the above is the reason why...we have a bigger and better product on the way.