Thanks for the info.
I was at Photokina, went to the Voigtländer booth: But at the time I was there it was totally crowded, so I decided to come back later.
But then I have lost so much time on other booths, that in the end I haven' had enough time to come back to the Voigtländer booth.
This Photokina was very crowded, because they have shrunk it with much less exhibition halls.
Amazing and surprising at the same time was the "film revival". All companies of classic film photography there reported a significant increase in film demand.