I may have some good news this time around. Just an hour ago, I received an email from Apple saying that my order has in fact been shipped - so the Apple Store Support employee which I talked to yesterday was actually right about that I should get such an email within 24hours.
I guess that you're European too, and, since we have the same estimated day of delivery, yours has probably been shipped too or is on its way to be shipped today. I would hang on a bit more - if you were one of us who followed the "Waiting for Arrandale"-threads to the bitter end, you have been through a far worse bit of waiting than what is coming now.
Anyhow, my estimated day of delivery has now changed to "On or before May 10th". I think it should be before, since it actually has been shipped now, but one can never know. Either way I'm happy that something is finally happening, and if it really is after the 28th/29th, then so be it - as long as I see some progress and can track my order on its way to Copenhagen via Rotterdam.
And now for some guidance from some of you guys who have become masters of tracking your orders through several websites: How do I do it? Is it through UPS, and if so, which number do I plug in? I've tried, but I got nothing, so, please, somebody guide me as to how you guys actually got all of that info on your orders exact location on its way to your homes.