I don't think it's a sure thing, but a lot of what Isenthal said rings true otherwise. Development for the next game probably wouldn't take another 6 years mainly because the pandemic made everything take longer and get more difficult. Plus they already have the framework for the mechanics so they could get away with just refining a lot, plus they know how everything works and such, so making a direct sequel wouldn't necessrily be easy, but it's probably not going to be the same kind of hard that this first one was.
As far as DLC, they wouldn't even have to raise the level cap. Just adding more subclasses, maybe a new class or two, a new race or two, more spells, all of that would get a lot of people's attention immediately.
