Assuming there is future DLC, does the Resolute Edition include DLC that isn't yet made, or is it meant just to encompass the stuff that's come out so far, plus the base game and sound track? Or will this be it for the DLC for the game? Trying to figure out what's meant by "all" in the description

I don't think it does. In the list of content there's nothing mentioned like a season pass, only all current content. Also, the fact that the price is already a discount when you put the total amount of DLC together, makes future DLC being included, too, very unlikely. If there's a lot more DLC, they could release a new, more expensive bundle for it.

Yeah, I think I understand. There was an Oblivion bundle before that's no longer available, and that had the prior DLC etc, so maybe it's a way of packaging things for people who want to start now. Would have preferred it say "all current DLC" or something but anyway. I see now, thanks