I'm referring to the old drivers with the black silk screen. Apparently because it was difficult to achieve consistency with the fabric's tension, they updated it with a metal mesh in 2007. The headphones pre-2007 that were made slightly off the quality control mark may or may not be those that made the "Sennheiser veil" myth.
However, some have said that it was just a colour change, because white fabric was cheaper to source. Maybe whatever material it was, just had better properties than of the black silk. Hard to say unless I get to see the updated drivers myself.
Hence is why I mentioned the "burn-in" time: if it has been playing since 2007, then most likely the veil has loosened by a margin.
Then again we could be talking about the mythical flying pig, and the Bermuda triangle teleporting planes around.