Yesterday, I got my card.
In the attached document "your cornercard", it says at the end (translation freely done by chumbawumba, who got knocked down ...)
Priority Pass
The whole world is angry about hevyly used airports and long waiting time at check in, about being late and lost connection. With a Priority Pass, you can relax. Undepend of Airline and class, that you booked, you will find a relexing atmosphere, all comford you can imagin and the possibility, in the time between, solve business matter. Holder of Cornercard have a option to special conditions for the priority pass, and - as a special "Aufmerksamkeit" - in the first year two entries for free to the VIP lounges.
In German:
Inhaber der Cornercard haben Anrecht auf den Priority Pass zu speziellen Konditionen und - als spezielle Aufmerksamkeit - im ersten Jahr 2 Gratis-Eintritte zu den VIP Lounges
Where is the hitch?