As time goes by and it seems we missed to publish date when we want to held the voting for this referendum (you would know if you followed IRC #maemo-meeting ):
Our goal was/is to held this referendum together with the new council election Q2/2015. But as we needed to postpone that -due to too low candidates- we also postponed this referendum for 4 weeks.

So new time line would be voting from 06.09.until 12.09.2015 according to council election timetable.