Let me tell you, if you liked the DF demo (warts and all) you'll LOVE the full game, trust me. ; )
I think they did release the DF Source Code, or someone aqquired it from the game I heard someone say, Emon probably knows more what I'm talking about.
If true, this is BIG NEWS. I want to know all about it... 'cause this passed me right by. Is it legal? 'Cause what a boon to the mod community that would be!