No, Sanctuary has multiple continents. It’s either everything in the release version of D4 or all of act 1. From what I can tell, it’s the north-east corner of the Dreadlands.
I say only act 1 because prerelease materials talk about other regions like Kehjistan too. If so, and they’re all similar sizes and gameplay densities, it’s a downright gigantic game. Like Skyrim big.
