I'm posting this more for myself, than anything else, but v0.5 of the Windows Vista Software Logo Requirements are online. They detail all of the critical aspects of creating software for the Windows platform that will allow you to place the "Designed for Windows Vista" sticker on your box.
By developing Windows Vista applications that adhere to the logo requirements, you can help ensure that your software products meet the expectations of your target market and are in demand by Microsoft customers. To customers, the Windows Vista partner logo means quality products that help them do familiar things more easily and new things for the very first time. Use this to your advantage by testing your software and displaying the Windows Vista logo.