Microsoft® Windows Server™ 2003 R2, a software update to the Windows Server 2003 operating system, makes it easier and more cost effective to extend connectivity and control to identities, locations, data, and applications throughout and beyond your organization.
Built on Windows Server 2003, Windows Server 2003 R2 takes advantage of the stability and security of the code base while extending connectivity and control into new areas. With Windows Server 2003 R2, you get the following improvements:
For more information about What's New in Windows Server 2003 R2, click here.
What is the point to write about such as old OS as it's something new? IMHO, this is only confusing