I noticed on Amazon.com tonight, they have the Mac OS X Leopard available as Pre-Order. The price is the as expected $129.99. I have been checking on Apple website everyday since Oct 1st to see when the new Leopard 10.5 will become available. Perhaps the release date is coming close as Amazon.com is gearing up for the sale. Here is what the website says:
"This product is expected to ship sometime in October. We will update the site with more specific information as soon as it is available, including system requirement details."
There are some rumors indicating that Mac OS X Leopard may be available by Oct 26th.