Windows 7 Service Pack (SP1) Beta is identified by Hardware Abstraction Layer 6.1.7601.16562. As of August 26, 2010, no one has a RTM version, despite claims being made otherwise on YouTube. This video takes a look at what information we have about Windows 7 Service Pack 1, and how it is a service and maintenance release; not a feature release. Windows 7 Service Pack 1 (SP1) will address every Microsoft Security Bulletin since November 2009 and provide compatibility for Windows Server 2008 R2 Service Pack 1 (SP1). This video also demonstrates the download and installation of Windows 7 Service Pack 1 (SP1) on a Windows 7 64-bit system.
http://windows7forums.com/