Granted it was a few years ago, but I am pretty sure yo will get a packet months later (April-ish?) that will tell you when you will be scheduled for the oral boards. Again, a few years old, so things may have changed, but that is what I remember from "yesteryear."
I got my written board results in the mail today. says that we are going to be randomly assigned to oral boards dates and receive notification of such in early february. the oral boards dates are either early may or mid november.