In case you missed this over on the WSUS product team blog, in the next few weeks they'll be adding a new category to your WSUS server – Expression Media 2.  This category belongs to the Microsoft Expression product family and will include updates for Expression Media 2, including service packs, optional updates, and critical or security updates.   For additional information on Expression Media Products see: http://www.microsoft.com/expression/products/overview.aspx?key=media. These updates will be available through the Microsoft Update Site, and (depending your on settings ) via Automatic Update, and to Windows Server Update Services (WSUS). 

For more information see the original post at http://blogs.technet.com/wsus/archive/2008/09/18/new-category-for-microsoft-expression-product-family.aspx.

J.C. Hornbeck | Manageability Knowledge Engineer