For the sake of other anxious ipad orderers, this is what has happened with my order so far
Ordered May 19th
Ships Jun 3
Delivers Jun 8
Monday, May31 (a U.S. Holiday), I get an update that its prepared for shipping.
This morning, Jun 1, I get a shipment notification with updated delivery.
Ships Jun 1
Delivers Jun 3
Fedex tracking still doesnt say they've picked it up yet, but they lag on their updates to the web system. I'm glad its running early since I leave for vacation Sat Jun 5. If its not here by Fri (shipping is to my office), I have to wait over a week to get back from vacation and go in to work on Monday to see my iPad
UPDATE: Tracking shows its been picked up and in transit. Estimated delivery Jun 4.