Have a look at the german forum
www.pilots.de and
www.cockpitjobs.de
Pilots.de seems not top work at the moment.... tray again later.
The tests are 60% in english.
The group interview is in german
Good luck but do not expect a lot from your selection. Their recruitment is extremelly subjective, and is known to be so.
I got turned down 2 weeks ago at the final interview.... really did not understand why.... particularly after the interview with the psycholog which really went good (at stage 2)
Viele Spaß !