Behringer has completed the engineering development through to a final prototype of the “Wave” ( they dropped the PPG in the name ) and it is now going out to beta testers. They put pictures on their FB page.
Recreating the sound caused them some difficulty along the way, but they feel that they “nailed it”. We’ll see soon enough.
ADDED : Oh and they are still working with Hermann Seib on this, which will help too.