Ramblings from another nerd on the grid
Microsoft® continuously collects feedback on Windows® 7 and Windows Server® 2008 R2 operating systems from its customers and partners. This feedback results in enhancements that help improve compatibility, reliability, performance, and user experience. These enhancements are typically made available in the form of regular updates delivered via Windows Update and, in some cases, the Microsoft Download Center. All updates are then rolled-up, along with additional enhancements, into a single package called a Service Pack. By integrating these updates into a thoroughly tested single service pack, Microsoft aims to provide a single high-quality update that will minimize both deployment and testing complexity for customers.
Service Packs help ensure that your systems are up-to-date. Updates to the Windows operating system, including updates released with bulletins from the Microsoft Security Response Center, are only built for currently-supported service packs. Installing the latest service pack ensures customers have the maximum support lifecycle for their investment.
Service Pack 1 for Windows 7 and Windows Server 2008 R2 includes previously released updates and will deliver a number of powerful new features for Windows Server 2008 R2 for virtualization and Virtual Desktop Infrastructure (VDI). New techniques in memory management with the addition of Dynamic Memory functionality, as well as the ability to deliver full-fidelity graphic experiences in remote and virtualized environments with Microsoft RemoteFX™, enable organizations to realize the greatest possible potential from their infrastructure. The resulting increase in efficiency and functionality allows for accelerated server consolidation, a more powerful virtualized desktop infrastructure, and an increased return on technology investments.
Get the docs @ http://www.microsoft.com/downloads/en/details.aspx?FamilyID=61924cea-83fe-46e9-96d8-027ae59ddc11&displaylang=en