Mine left their hub in the Netherlands today.
It should arrive on May 28th.


I've ordered the 32GB WiFi.
Some friends have ordered 64GB and/or 3G, haven't heard anything yet.
Maybe the assumed "highrunners" are delivered ahead of the others.
Anyway: Very positive surprise. Delivery (leaving their hub) had been scheduled for May 28th. If you order now, the website already says June 7th.
EDIT: A friend of mine got confirmation as well: iPad WiFi 64GB on its way as well.