No unreleased music in the demo, but there's unreleased music in the full game. And on top of that, there's a lot of newly composed orchestral stuff just for the game. It's pretty good stuff really. Fits with the rest really well.
Yes, I admit it. I came here because I want to hear the Indy 4 score early. But I really am a big JW fan, and a fan of scores in general. Maybe I'll stick around. I didn't have to join to read this thread anyway. I just think this looks like a great forum.