That is a direct link to the FAQ page for the preview program.
http://www.microsoft.com/windowsxp/preview/faq.asp
The question that interest all who are waiting...

I ordered the CD option. When can I expect to receive my Windows XP Professional Release Candidate 1 CD?

Windows XP Professional Release Candidate 1 was released on July 2, 2001. It takes some time for the code to be shipped to the CD manufacturer, and then to our fulfillment center, before it is on its way to you. CDs will be shipped from the fulfullment center starting July 19. If you order before July 13, you can expect to receive your CD by the end of July. If you order after July 13, you can expect to receive your CD within three weeks from your order date.