According to the report, the purpose of this update is to provide improvements in the length of time it takes Windows Update to scan for updates and how quickly signature updates will be received. In testing, the improvements have reduced the scan times on some machines almost 20 percent.
In addition to the update announcement, Windows Update Product Manager, Michelle Haven, provided a review of the Windows Update options and how the settings effect your computer.
For additional information on Windows Updates, see my tutorial, Understanding Microsoft Updates. Also note that malware can change your Automatic Update settings. To protect those settings refer to Detect Changes to Windows Automatic Updates with WinPatrol.
- Microsoft Update Team: Upcoming Update to Windows Update