Pre-ordering available:

http://www.apple.com/macosx/

$129 single, $199 family pack. Student discount bumped up to $116. Customers who purchase a qualifying new Macintosh computer on or after October 1, 2007 that does have not Mac OS X v10.5 Leopard included can upgrade to Leopard.

:D

ordered mine this morning now i am like a kid waiting on christmas.

It's even more like Christmas for me. I ordered a new MacBook Pro today and will take advantage of Apple's OS up-to-date program to get Leopard. I studied the fine print and it looks like the up-to-date offer does not apply to refurbished Macs sold by Apple, by the way, as they have a modified serial number different from the ones in Apple's approved list.