I'm ashamed to admit that I haven't seen any of those DEFA films, though at least "The Gleiwitz Case" and Karbid und Sauerampfer are already considered to be classics by some. Seems like you are getting some interesting releases.
I have Gerhard Klein's film on VHS (taped off TV), but I need to see it yet. When I see it I'll write some notes in the appropriate thread (or maybe arsaib can already do so - seems like he's seen more german films than me. ).

Btw, I'm still working on that piece on another film by Klein, but I don't know when it will be finished. At the moment I have some dozen unfinished film reviews at home, and this is getting a bad habit. Hopefully it will pay of in the end...