I just ordered a set of new panels for my CLS IIz's, which incorporate the latest diaphragm improvements (mylar and coating), high(er) current hookup wire, and "Clear-Spar" section dividers.
My current panels are 17 years old. They sound great and look perfect. Yet Dana Brown at ML told me to be prepared for a big surprise! They'll be here in a few days. Stay tuned.