Here’s an interesting visual. ManaPot has placed the current Diablo 4 zones on top of the full map of Sanctuary.
While the actual landmass that’s already taken doesn’t really indicate how much space is “left” on Sanctuary, since we can visit Hell and other similar places, it’s still a very cool look at how big the world is compared to what we have in-game now.
Future expansions don’t even have to take place in the rest of the world either. There’s plenty of other places to go, from the High Heavens, Hell, or even underground! We also see that there’s at least as much ground to be covered as we already have, however.
So, next expansion where?