@timsk, I don't think apps go to the committee meeting immediately after their interviews. My understanding is that applicants are reviewed at the second or third committee meeting after their interviews, which is where the 6-8 week timeline comes from. Since 2-3 committee members review the app once interviewer notes are added, some time is required before applications can be considered by the full committee.
@Hashimoto's Samurai, I'm not sure on the timeline of waitlist/rejection emails. Those seem far more variable. I know 2 October interviewees who were both waitlisted by email on Tuesday (so at approximately the same time that acceptance emails went out).