Does SP2 provide updates to the new components that came with Windows Server 2003 R2?
Yes, SP2 applies needed updates to the R2 components of Windows Server 2003 R2. Do I need to upgrade to Windows Server 2003 R2 or Windows Server 2003 SP1 First? No, Service Packs are cumulative, meaning SP2 contains all previously released Security Bulletin Updates and installs all individual hotfixes released since Windows Server 2003 RTM. Does SP2 change the non-R2 machines to R2 SP2 machines? No, it will not upgrade Windows Server 2003 to Windows Server 2003 R2 Why does this update the Windows XP Professional x64 Edition? Windows Server 2003 x64 Editions and Windows XP Professional x64 Edition were introduced with the release of Windows Server 2003 SP1, all sharing a common codebase. It is this common codebase that allows SP2 to provide updates to all versions of Windows Server 2003 and the Windows XP Professional x64 Edition. Since Windows XP SP2 was already released long ago, what will Microsoft call this Service Pack for Windows XP? It is called Windows Server 2003 and Windows XP