Microsoft Update Team announced few months ago that they will be releasing a new version of Windows Update agent and it is now available as per Calendar of Updates team – Pat:
Windows Update Agent 7.4.7600.226 is now available from http://support.microsoft.com/kb/949104/.
I’ve heard from several people who got the update installed automatically via Microsoft Update. I myself did not get it automatically; I had to download and install it from the KB link above.
Improvements made to version 7.4.7600.226 of the Windows Update Agent
Improved scan times for Windows Updates.
Improved user interface for Windows Vista and Windows Server 2008 computers running Windows Update.
More visible and detailed description of updates.
Improvements in how users are notified about service packs.
The calendar of updates entry is here: http://www.calendarofupdates.com/updates/calendar58167