According to the auction it is a one off edition and several others sites.
http://www.explosion.com/55353/jojos...tion-revealed/
http://www.gamasutra.com/view/pressr...R_GAMESAID.php
and a bunch more.. I think the German site just got the date wrong. Should just be the one auction that went for a lot less than they were expecting. It was exclusively for the Gamesaid charity.