Depending on where you live, I'd say there's a pretty good chance it will be delivered to you tomorrow (June 11). I live in Florida, and my MBP also departed Memphis earlier today. The estimated delivery is still June 13, but my iPod arrived the day after it left Memphis, so I am expecting the same for the computer. By the way, I paid for the two-day shipping option. Hope this helps.
Edit: I'd recommend watching the tracking page tonight to see where it ends up after Memphis. If it is close to your location, you can probably expect delivery tomorrow. It sounds like everyone has gotten their MBPs earlier than FedEx estimates.
Thanks for the info. I am in JAX, FL so I figured after Memphis it should be quicker than the 13th unless it sits in a sort house for awhile. Mine left Memphis around 3:18 today and is on its way to Jax. Do you think the time of day estimates are correct even if the day isn't? I sure do not want to chance missing this delivery.