I submitted early, and got in the queue to be verified. Once my last transcript showed up in mid-June then my application was already complete so it jumped to the head of the stack.
I do not suggest waiting for the transcript to be sent to verify, then you will be on the bottom of the stack and it will take a while to verify.
Mid June is still early. I was in the first groups to be interviewed at several schools, and I had two acceptances by the end of October, and all three acceptances by the end of November. I then canceled all my other interviews.
Check out my MDapps to see the timeline for each school. I kept it up to date really closely.
dsoz