I know of many August MCATers who got in, but the sage advice for them, and still holds true now, is that to keep yourself from being late, you want to submit your apps before you receive your score. To start the process in October is a really bad idea. You want your app to be complete the instant the score hits, not months later when you see your score, submit the primary, get it verified, submit secondaries, and after the school finally realizes it has everything and forwards the packet to the committee. By then a lot of people are already getting accepted and a ton of interview slots will already be scheduled. Doesn't mean a top student can't still get in, but you went potentially from competing for 300 acceptance slots to about 100.