Das Kombinat® released a 7" single 'Haushalt und Technik' on block 4 in 2001. It was limited to 500 copys and was soon out of print. Maybe you can still find a copy on some other shops/mailorders. On it are the new songs 'Waschmaschine' and 'Aseptisch', also available as downloads on bandcamp

The latest full CD release is 'Betriebssystem' from 1998 and its still available.

The first three official tape releases
Existenz (1990),
B.S.E. (1991) and
Homunkulus (1991).
are all available now at bandcamp