This article summarizes the current state:
http://www.allianz-mtv-stuttga…rrekord-des-jahrtausends/
It means: on Friday, the 29.4.2016 at 17:44 exactly 4502 tickets for Porsche Arena were already sold, beating the high from USC Münster vs. Rote Raben Vilsbiburg from 2005. If the number exceeds 5000, it will even break the Bundesliga all time record from Stuttgarts former (no more existing) club CJD Feuerbach (a three times western German champion) against Bayern Lohhof from 1987, when the final was played in Sindelfingen (a city near Stuttgart).