Interesting, I submitted this for Class C Airspace in early October, so maybe they're finally getting around to it. I did receive a "we got your submission" e-mail right after it, and now I've gotten this, but I haven't heard a thing on my flying over humans waiver so who knows? Thanks, all, for your responses!
Yeah, these started a couple of weeks ago. They're finally giving some feedback, even if it is a bit cryptic. If you have multiple requests in, you have no idea which one it refers to. Like others said, it's progress and better than the black hole we originally had.
As I remember you get them for submission, transmitted to ATC, and approved or denied.