I think they mentioned in the livestream that they weren't really going to put anything out "officially" because the quality wasn't up to the level they wanted, so I'm not sure if they're willing to do that.
Same things for the image and concept stuff. There will be cool to release music's for the backers only. Too bad
I have a feeling that the general consensus is to not release stuff to the community that is "Half-baked." Invariably, it would get leaked and many people might hear it and think "wtf, thats awful" not realizing that it is a piece of a conceptual soundtrack. Dont get me wrong, I want the music as much as the next guy. However lets be realistic here.