So Dwarven Forge has created a third campaign, this time for building houses and cities. Pledges are for the buildings, and so far several add-on packs for streets and sewers, among others.
The comment section is humongous, and can be a bit harder to track what the DF folks say, as this time the backer account is being used more for the technical side, not communications or updates. Best to follow the DF reps' comments on their pages, or the FAQ documents a backer named Knightess Jenny O'C is compiling questions and answers:
questions by subject
newest questions first
And the main Dwarven Forge folks responding on the comments section:
Nate Taylor's comments
Stefan Pokorny's comments
Wondy Amare's comments