From Apple’s website-
“Packed with more than 300 new features, Mac OS X Leopard goes on sale Friday, October 26, at 6:00 p.m. at Apple’s retail stores and Apple Authorized Resellers, Apple announced today. And, beginning today, customers can place pre-orders on Apple’s online store. “Leopard, the sixth major release of Mac OS X, is the best upgrade we’ve ever released,” said Steve Jobs, Apple’s CEO. “And everyone gets the ‘Ultimate’ version, packed with all the new innovative features, for just $129.”
I’m so excited for I am going to get a MacBook Pro with Leopard Pre-Installed.  I’ve been waiting for a while now, but the wait is almost over. Yay!
You can find out more information here.