I always buy them in the second weekend of September at a large coin show in Holland, so early September I would say !!
It is early September. There's a press pre-launch event in Germany in mid-August. We may or may not be allowed to publish images then. Hope we can.
This coin show(the biggest in Holland) will be held in Houten (town near Utrecht) on 19th of September. You can find more info on this website: http://www.wbevenementen.eu/muntmanifestatie/#locatie (sorry its only in Dutch, google translate will help). Late August you will find the dealers list on this site aswell, also some from Sweden.
As I happen to be travelling to germany wednesday, I would love to more about this. Google is apparently broken, so any additional information would be much appriciated!