I appreciate your positivity in this time of stress and anxiety, but just to be very clear for the sake of not getting other applicants' hopes up, the email that asks if you're still interested actually states that the admissions committee has "completed their review you your application and would like to invite you for an interview." They just want to know if you would like to accept the interview and that you are still interested. I just responded with by saying yes in a few words and very shortly after I received the formal interview offer. Ultimately, they invited you and THEN you sent the update. It was a yes or no question, there was no need for you to send the update.
For applicants still waiting, send worthy updates if you have them, but don't just send a random update and then expect a II. I still believe that the scoring system at UM is what determines who gets the interview. Speaking as a re-applicant, keep your hopes high but your expectations low. Good luck everyone.