The Commerce Server team has announced that a Technology Preview of the Commerce Server 2007 Starter Site is now available. This CS2007 Starter Site CTP will NOT FOR PRODUCTION USAGE, and will NOT supported by Microsoft.
If you are an existing beta tester from the CS2007 beta progam, in Connect: CS2007 Starter Site CTP you can find more information and download the product.
If you have not participated in the CS2007 beta program, go to http://connect.microsoft.com and sign-in using your Passport Account. After it, you will need to choose CS2007Starter Site CTP from the list of available programs by clicking the link for "Available Connections" in the menu on the left side of the page. From the list of available programs, click on the link to "Apply" next to the CS2007 Starter Site CTP. After completing registration, you will be automatically given access to the Connect site to download the starter site. From the CS2007 Starter Site CTP home page you can click on the "Downloads" link on the left side of the page, which will load a page showing all downloads currently available on the site for Commerce Server.