I believe it was totally complete on the 7th or 8th of August. I remember my "deadline" was the 11th and that my two recommendations were in just a few days before that.
I guess they e-mail all their invitations. When was your application complete?
Got my invite over the phone last week and got an email today! My app was done in late July. I am really surprised because I am NOT from Michigan! Good luck everyone!