This is a good, running KB article for discovering changes in Windows Update content and what might currently be included in the WSUSScan.cab used by SMS Inventory Tool for Microsoft Updates. It is also a good resource for discovering why a new CAB might...

This is a general release information article relating to the availability of the WSUSScan.cab file, a subset of the Windows Update and Microsoft Update patch data that includes information about security updates, update rollups and service packs for...