This was posted on the Dell Message Boards by the Dell Moderator, so take it for what it is worth.

http://www.dellone2one.com/

"For Dell customers waiting patiently for your XPS 700, I have news. We will begin shipping within a week from today. Also, I can confirm that we'll support the Pentium D, Core 2 Duo and Core 2 Extreme processors when they are available. Sorry for making you wait, but it's coming."