I'll share what I know about my timeline:
Application received: November 16
AOR: December 25
MR: January 17
Medical passed: Not sure, some time in February
AIP: May 9
DM on Sponsor's side: some time in May, not sure
DM on Applicant's side: May 16 [although mycic still show we are reviewing eligibility]
Also, I'm a Vancouver applicant. At this point I *hope* that I won't receive landing invitation before I go home in July, otherwise leaving without a PR card might be a problem...