I'm assuming of this month? It took about 3 weeks for me to receive a secondary, but what I speculate will happen is that secondaries will be sent quicker because the number of applicants submitting their primary starts to go down a bit later in the cycle. This means that the time it takes to review primaries from applicants in a given period (let's say 2 weeks) will be considerably shortened. Again, this is just speculation but hopefully this is the case.
There was a mention of having your LORs and everything in on or before August 13th, so I'm thinking that's when they'll review the pool of applicants who are complete by then, and send out interview invites accordingly. To you and everyone reading this, pre-write your secondaries so that if/when you do receive the notification, you can submit the app the same day.
@IDMT-2-MD, best of luck and if you receive an II but don't want to post your specific date, PM me. If we happen to get interviews for the same day, my stature and the high and tight haircut will be a dead giveaway that it's me.