basically no one came up with facts if this is true or not. The OP in the cited thread states, that everybody was talking about this at the Fotoforum (kind of fair) in Münster / Germany. This is also stated by another site, maintained by a well known and reliable german retailer, specialized in bw. He also cites no hard facts.
Thats why I asked here - to get an answer if this is true or not. Unfortunately this turned into a discussion about the other thread.
I'm waiting for Simons reply now.