Quickr 8.1 (Domino Sevices) in German (and other Tier 1 languages) has been released yesterday. You should be able to download them from Partnerworld now. The part number for German language is C1CF8DE. The code seems to be on hotfix level 3.
The other part numbers can be found in this document.
Quickr 8.1 (Domino) in German has been released