Okay, if the past, as recent past as R1, indicates what'd happen in the future, we may see something similar (this is based on livewire):
Round 1 was deadline Sep 17th (R2 deadline was Jan 14th)
Invite wave #1 on Oct 20th: NYC/BOS (major like 15 invites) (R2: happened around Feb 18-20th)
Invite wave #2 on Oct 30th: California + Dubai (smaller like 10 invites) (R2: should happen right about now)
Invite wave #3 on Nov 2nd-5th: Rest of US + international invites (major ~30+) (R2: should happen up to Mar 10th)
*Keep in mind that R2 is usually bigger and this year they are starting R3 for the first time, so this may be why they're not as smooth... Still this level of disaster really poorly reflects on Sloan.
Rejection seems to have been all released on Nov 10th (R2 equivalent would be Mar ~10th), and it appears for R1 the email from admissions contained more specific dates (ex. "We will begin sending out interview invitations in mid-October and continue until the week of November 9th, at which point each applicant will receive an updated status").
Additionally last year's R2 was due on Jan 8th and rejects went out on Mar 6th so again, we should expect to find out by Mar ~10th.
Great analysis! I am an international applicant and still have hope.. 10 days to go! Good luck to everyone waiting.