In Germany we just started to take that Bachelor/Master/Phd system. Our system is between B/M (Diploma) and M/Phd (Doctor). So the change is sometimes not compatible with the way we study and learn. But here the three main universities:
Media Art and Design â€“ Master of Fine Arts (M. F. A.)
It includes Interaction Design and you can take courses of other genres like ID, Graphic Design, Fine Arts or Architecture. In Weimar/BUW you have a project based and very interdisciplinary study - old Bauhaus style.
Experimental Media Design - Master Course?
http://www.udk-berlin.de/index.php?cSID ... artEnglish
Im not sure if its a standalone Master or a later upgrade course. I didnt understand that website. In general in Berlin/Udk they have a class system, like one teacher for several years. At Experimental Media Design this is Joachim Sauter of Art+Com.
Audio-Visual Media, Master of Fine Arts?
In Cologne/Khm they have a wide spreaded focus, but in fact this is your choice if you go to a very artistic, experimental way of interaction design. More art than design. You have to check individually for a master - write them your artistic ideas/ways.