Most find out tomorrow (R2 announcement date). Some will get a call and others just find it posted online through the application portal. It does not mean anything if you do or do not get a call, or even if you find out earlier than someone else. I had a work issue, so I learned my status about a week before the R1 announcement. We had a number of waitlisted candidates join a few days before classes started because several people deferred due to COVID. You join your class and none of the admission stuff matter anymore. Everybody is the same, including R1, R2, waitlist, call, no-call, etc. Nobody cares about the stuff we all cared about deeply before we were admitted. Good luck tomorrow!
Edit: I guess the date is Wednesday, not tomorrow.