I've not done much lately on the terrain generation project. However I have yet to write code for dungeon or maze generation. I am going to make that as a next attempt. I hope to have something to show here in the next few days depending on how much time I have to work on it.
I also wanted to add a link here for posterity. It's a fantastic resource for procedurally generated content and contains lots of good information on what it is, how it's used, and resources to implementations that are out there. The angband variants seem to have a great grasp on AI and dungeon generation and there are articles for that there as well. Good stuff!