Beginning next month Microsoft will start an upgrade to the Windows Update and Microsoft Update services.
Microsoft plans to start the infrastructure update in late August, claiming "it will take a couple of months to complete the rollout." The update is required to "maintain and improve service quality, reliability, and operations." The update will simply improve the user interface for Windows Vista and Windows Server 2008 computers running Windows Update, adding a more visible and detailed description of updates as well as improvements in how users are notified about service packs.
If you currently apply your updates automatically then this update will not modify the look and feel of Automatic Updates. The infrastructure update will be automatically applied for those who have Automatic Updates enabled. For those who have selected "never check for updates" this update will not be applied.
The last update for Windows Update occurred in November 2008. For more information on Windows Update please visit the Microsoft Update Team Blog.