@penicillinman I'm going to send you over to this link to watch the TMDSAS video about the Match.
The TMDSAS Match
Each school may have its own strategy, some like to make many pre-match offers, and others not so many, preferring to see MORE of their interviewed applicants before coming up with their list of admission offers.
It is not chronological, except that obviously those with interviews scheduled for December won't be hearing back from those schools now.
It is not only high-stats applicants who get these offers, but also those who made a great impression at their interview.
I like to look at it this way: A school that has already interviewed you and REALLY WANTS YOU IN THEIR CLASS will make an offer now.
From your standpoint, it is nice to be wanted, and with an offer you can worry less.
Maybe you will have more interviews in the future, but maybe when it comes down to ranking and deciding on schools, you will have a fond place in your heart for the one who offered you admission first.
If you still have questions after looking at the TMDSAS info, I can try to answer them.
Wysdoc