Some of the most noteworthy new features added to Windows with the help of SP3 are black hole router detection and support for NAP (Network Access Protection). The third installment of Windows XP service packs can be deployed with relative ease thanks to a straightforward installer, which is cumulative, meaning that users will be able to bring the latest improvements over from just about any pre-SP3 version of Windows XP, on all variations such as XP Home Edition, and XP Media Center Edition. Released on 21, 2008, the Windows XP Service Pack 3, or SP3 for short, comes with no visual changes and lots of under-the-hood improvements over its precursor, the SP2, as well over the standalone version of Windows XP.