I believe we'll be visiting locations relevant to dwarves (mountains), lizards (subterranean perhaps?), elves (forests maybe), humans, and maybe something specific to undead. Plus the spirit realm place. Should be a variety of locales and environments, but doubt an underwater city will show. They did a fairly good job of variety of environments in D:OS1, and the island seemed fairly interesting to look at in the release footage, so I have good hopes. They've talked a lot about designing stuff specific to the races, and Swen's inspiration of the dunes from his homeland for the island we saw, so it's obviously something they care about quite a bit. Not sure who the art director is.
