This is just an heads up in case you missed the announcement, but Windows Search 4 is coming to Windows Update sometime this month (if it's not already here).  Note that this update will not automatically install on WSUS clients and Windows users will either see it as an "Optional" or "Recommended" update depending on the version they are running. 

For more information see:

Cecilia Cole's (WSUS Program Manager) post on it here

and

The Microsoft Update team's post on it here.

Enjoy!

J.C. Hornbeck | Manageability Knowledge Engineer