Already a while ago, Maik Nogens created a Google Map for testers in Germany, please feel free to add yourself:
Furthermore, the GATE 02 Workshop (German Agile Testing and Exploratory Workshop) has been announced a while ago: It will be held in Munich, on September 8th. Unfortunately, this year I will not be able to make it there, but the list of participants looks already quite international, and last year the workshop was really great.