Hi there,
Not who you asked, but I interviewed on Thursday the 5th and received my passport yesterday (I'm in southern ON). Tracking number came Friday the 6th. I had signed up for courier service previous to the interview, I did nothing after the interview. I received two emails with the tracking number, one from Purolator and one from U.S. DoS Visa system (donotreply@usvisa-info.com)