As great as Dredd's success on DVD/Blu-ray/Netflix/whatever is, I'm still not too confident we'll get a sequel. Even if we do, isn't there a better chance it'll be straight to home video without a theatrical release? Not only could that hurt the budget, it's possible they may not even get Karl Urban back which would be a great tragedy, IMO.
I don't know, maybe I'm just unnecessarily cynical. I do hope it gets a theatrical sequel, I'm just not holding my breath.