Microsoft has begun testing a new patch program designed to help enterprise users update versions of Windows, Office and other software. The program, called Update Services, should appear in final form later in the year and will be free to users.
- couldn't deploy Office patches, - didn't let domain admins deploy MS's optional hotfixes or 3rd party patches - wasn't integrated with Windows Installer technology and - didn't allow for group- or OU-specific deployment.
So there's a lot of room for "further improvements" in Windows Update Services, now known as "Update Services".
BTW, very creative renaming by the marketing department: SUS => WUS => US => MUS?