Web-based Distributed Authoring and Versioning (WebDAV).Improves the Windows Client Remote File System components.The update also includes (aside from the 90 hotfixes): Microsoft is calling it 'An enterprise hotfix rollup is available for Windows 7 SP1 and Windows Server 2008 R2 SP1'īasically, this is very much like a SP2 for Windows 7 in that it includes 90 hotfixes and patches released after service pack 1 in one huge update. I learned of this updated from Windows Weekly last week, in which Mary Jo Foley mentioned this update.