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.