If you were wondering about that "all future content" backer addon, wonder no more. There won't be any, not that I thought there would be:

http://steamcommunity.com/app/449300...2857138571846/

DLC probably not. Userscore and number of owners is too low for that ATM
Of course, I can't even get the damn game after it's been out for two years, so what does that matter to me?