On February 16th Windows 7 and Windows Server 2008 R2 SP1 will be available for MSDN and TechNet Subscribers as well as Volume License customers. On February 22nd, Windows 7 and Windows Server 2008 R2 SP1 will become generally available for folks to download via the Microsoft Download Center and available on Windows Update.
http://windowsteamblog.com/windows/b/bloggingwindows/archive/2011/02/09/announcing-availability-of-windows-7-and-windows-server-2008-r2-sp1.aspx