Yesterday I received the question - what products are now updated through Microsoft Update?  I had to do a little more digging than expected to find the answer so I'm posting it here for reference.  I ended up finding this FAQ off -

Link to FAQ

Which operating systems and programs does Microsoft Update support?
The service currently delivers updates for these Microsoft programs and operating systems:

Windows Server System and related software products:

  • Windows Server® 2003 Family
  • Microsoft® SQL Server™
  • Microsoft® Exchange Server
  • Microsoft® Visual Studio®
  • Microsoft® Internet Security and Acceleration Server
  • Microsoft® Data Protection Manager
Other programs for Windows-based computers:
  • Windows®
  • Microsoft® Office System
  • MSN®
  • Windows® Defender