I was just wondering. I planning on submitting my application pretty early, like within a month, and just wanted to know how early people got interviews.
Schools generally start sending out interview invites in early to mid August for September dates. There are some exceptions (Texas schools, I believe, send out invites in July, but you'd be applying to them separately anyway), but that's the general rule. Schools generally like to solidify the incoming class before they worry about interview invitations.