Takes a bit more than a year to add a city. The game sold well (for a hardcore RPG) but not well enough to dedicate another year (Darkest Dungeon it is not). We'll add more content (expect 3-4 updates) but no new cities or locations.
Our long-term (i.e. a full scale RPG) project is a "generation ship" game, inspired by Heinlein's Orphans of the Sky. We're aiming to create a different experience with the same core ('hardcore', TB, C&C). So, combat will be turn-based but focused on ranged rather than melee (earth-made laser guns - rare but powerful, ammo even more rare, so save for special occasions - vs crude ship-manufactured firearms favoring burst rather then precision), level up to distribute skill points and unlock new feats, focus on the individual and more dynamic C&C, focus on exploring rather than working your way up in a faction; you'll be one of the 'freemen' who aren't born into a caste-like faction, more traditional open level design.