+1, the thing, the release notes, and the survey list. I like surveys.
+1 to the general idea. We'll want to give some thought about how to put it in front of people such that we get meaningful answers. Which I suppose means we should think about what it is that we're asking. Essentially NPS comes down to either "yay Fedora" or "boo Fedora", but where we put the survey will depend on what we're specifically trying to find out.