I know that - and they have also had something to do with producing a 1.5x crop factor digital rangefinder (for Epson) in the past.
What I meant is that it is unlikely they will produce a 4/3rds or Micro 4/3rds camera, which is specifically what the original poster was asking about, if you care to read back - and I explained why I thought so (not liking digital cameras/crop factor of the digital sensor in such a digital camera). Of course, I said it was unlikely for Voightlander to join the 4/3rds "system" meaning cameras rather than lenses exclusively (well, one lens anyway), however I should have been more specific on this distinction of what I meant when I said "join the system". This is also why I excluded Sigma.
I don't know what a Micro 4/3rds website (whether official or independent) listing ANY M-Mount lenses has to do with anything being discussed here today. How are you suggesting that this website list makes it more likely for Voigtlander to make a 4/3rds or Micro 4/3rds camera due to Olympus' woes ?