We've announced some new requirements for hardware supporting XPS and WSD. Specifically we are giving 1 year additional time for vendors to implement XPS and WSD before requiring those technologies in order to receive a Windows Premium Logo.
Here is the specific text captured from our latest newsletter that went out a few days ago:
Microsoft is updating the Premium Logo Program requirements for Microsoft Windows Vista after carefully reviewing the product schedules and marketing drive. The new document that contains these changes is Version 3.03 of the Windows Logo Program Device Requirements for Windows Vista Client and Windows Server code named "Longhorn" will be available for download at http://www.microsoft.com/whdc/winlogo/hwrequirements.mspx on July 17.