According to Booth Insider's (Admissions blog) by Tyler Smith (Assistant Director of Admissions), "Applications are read in random order and ensuing interview decisions are released on a rolling basis from mid-October to October 24th."
In other words, a new "Update" tab will prompt in your application page until October 24th. You will receive a decision of Invited to Interview or Denied.
I'm following this post since Monday and the invites really seem to be in random order - there is no recognizable pattern in them, random locations and industries.
Best of luck to you all, and I hope that everyone hear back before the 24th (it kills to await until the last minute...)