Ah, weird, I thought I replied to this but it looks like it got eaten. We have two follow-ups to ToA planned right now (neither of which are ToA 2, which we may end up doing at some point in the Long Away), but since we're a small team we'll only be working on one for now, probably starting it after ToA's story mode is wrapped up. We'll still be working on ToA concurrently, which'll let us still work on traditional fantasy themes like we currently are, as well as more modern themes with the new game. It'll still be a fantasy setting, but an urban fantasy instead.