I still don’t see a page where folks can actually order the Latitude XT Tablet PC, but they have launched a dedicated Tablet PC : www.dell.com/tablet. Lots of videos of the XT in action, testing, and feature tours. Check it out!
I’d expect a “Buy / Customize” button to be added soon.
UPDATE: Loren Heiny just let us know a Buy / Customize page is now live for the Latitude XT Tablet PC, with prices ranging from $2499 – $3134. The $2499 has the 1.06 Core Solo processor, while $3134 option has the Core 2 Duo 1.2 ULV processor.