Looks like mass pre II R's went out last year on 12/16 (so probably tomorrow this year). This corresponds to last day of classes.
As far as A's, I think 12/20 was first day last year so I'm guessing 12/19 this year (which, like last year, is the Monday after classes end). Looks like they came out around 8:50 am by email and that you accepted via portal so I assume there were changes in portal too.
So, I'm expecting a round of pre-II R's tomorrow, and a round of A's on Monday.
Good luck to all!!!!!