"Earlier today you received an email inviting you to schedule an interview with the Kellogg Part-Time MBA program. You received this email in error and should disregard the contents of the email.
We deeply apologize for any confusion this may have caused. There has been no update to your status at this time. Please contact the Admissions office if you have any questions at..."
This was their response when I emailed back to query about the invitation email. Full-time MBA applicant here.