Sharing teasers before the release gets me excited. Demos after the release feel special. I like hearing the work in it's final form as a whole first so that I get "the experience," but then want to hear and learn as much as I can about how it got there.
So for me, snippets of the demo would be exciting now with the full demo released later. Or I could just listen later.
So for me, snippets of the demo would be exciting now with the full demo released later. Or I could just listen later.