This is covered in many places, but just to be sure

As Windows Server 2008 RTMs, Customers and Partners Adopting with Help of New Tools, Training

With Windows Server 2008 releasing to manufacturers today, Microsoft has made tools, training and resources available to customers and partners to help make it easier and faster to deploy or build upon the new operating system.

REDMOND, Wash., Feb. 4, 2008 –Approaching the company’s largest enterprise launch in its history, Microsoft reached another important milestone today with the release to manufacturing (RTM) of Windows Server 2008. The response from IT professionals and developers has been strong as the company moves toward the worldwide launch of Windows Server 2008, SQL Server 2008 and Visual Studio 2008 on February 27.

As Windows Server 2008 RTMs, Customers and Partners Adopting with Help of New Tools, Training: With Windows Server 2008 releasing to manufacturers today, Microsoft has made tools, training and resources available to customers and partners to help make it easier and faster to deploy or build upon the new operating system.

Other MS sites that might matter:

Windows Server News on Presspass

Windows Server 2008 Web Site

Windows Server 2008 Developer Center Web site

See how the Lone Server is preparing to Upgrade

Heroes Happen Here: Windows Server 2008 Launch

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David