While Dresdner SC launched season tickets selling already a while ago (I can't understand that, to be honest), I can report from Stuttgart, how the conditions at least until end of October will be in the best possible case:
first there will be no selling of season tickets for the time being - I guess, if the pandemics are much weaker in the second half of the season, they might sell them for that second half anyway, but this seems highly unlikely at the moment.
Until end of October in the state of Baden-Württemberg there is a limit of 500 persons, so together with the 100 or so sponsor booked tickets and core attendees there will be roughly 300 tickets to be sold at most per match on an online only base, with tickets available only in pairs for people from the same home, they have to give every name now in advance (not only the buyer as until last season). - To be honest, I'm surprised, that they try to get admittance of fans at all by health officials and state law makers with this low number. If they get an allowance for it, is a total different topic.
This will effectively exclude most of the most faithful and loud fans, not only me, but the majority of them. And with so few limited fans in the hall there will be no real fan feeling.
They may occasionally play in the bigger Porsche Arena, if the limit of 500 persons is increased to at least 1.000 (what is not possible in SCHARRena due to the distancing requirements).
I guess this will be similar in most halls, so we have as expected a very quiet season ahead, with a much smaller home advantage as usual.