I ordered on the 6th in the UK, expected ship date 19th June, expected Delivery 21st June. Still waiting for updates!!! I guess early shipments are in the US only.
Well, on US and Canada online Apple stores the iPad is noted as being shipped in 7-10 days. On your order details it'll list your expected ship date as the 10th day.
Some people mentioned it came a little earlier, but that still coincides with the initial 7-10 day range.
You still have a chance of getting it earlier....