Microsoft has released the Windows 7 Service Pack 1 (SP1) RTM for everyone. Windows 7 SP1 was earlier released for MSDN and TechNet subscribers last week. Starting today users of Windows 7 and Windows Server 2008 R2 can download the the Service Pack 1 (SP1) via Windows Update (as KB976932) when it becomes available to them. Most of the Service Pack 1 contains updates most of which have already been released through Windows Update.
You can either download the SP1 for Windows 7 or Windows Server 2008 R2 through the Windows Update or also from the direct links from Microsoft Download Center, made available by Microsoft (added at the bottom of this post). The advantage with downloading and installing Service Pack 1 through Windows Update is that it automatically detects the updates that have been installed previously on your Windows 7 and downloads only the ongoing updates that are not yet installed on your computer.
The build number of the final RTM is 7601.17514.101119-1850 and it does indicate the build has been compiled on November 19, 2010. The SP1 (KB976932) package includes client-side support for RemoteFX and Dynamic Memory two new features that are enabled in Windows Server 2008 R2 SP1.
If you have installed a pre-release version of Windows 7 or Windows Server 2008 R2 SP1 (like Beta or Release Candidate versions) on your machine, you must uninstall them before proceeding further with installing the Windows 7 Service Pack 1 final RTM version.