I ordered mine on the 8th a few hours after the keynote, and it still says prepared for shipment. I just called Apple and got pretty much the same response as above. Something along the lines of...we are trying our best to get all the orders out on time...had a higher demand than expected. But worst of all..."If you don't receive it by the 19th you should receive it fairly soon afterwards since it is already prepared for shipment." I'm taking this to mean many of us are not getting these on friday. Also, the Apple rep confirmed these are all coming from China...so today is probably the cut off for receiving the orders anyway.
This is BS, orders should have been filled on a first come basis.
I agree, I really think that they shipped them completely at random.