Although beta builds and unofficial releases of Windows 7 service pack 1 has long been available on the BitTorrent network, those who were waiting for the official announcement can start their download engines now.
The Microsoft Windows Team announced the availability of the Release Candidate (RC) of Windows 7 and Windows Server 2008 R2 Service Pack 1 (SP1) to the public, just a few hours ago. This RC signals the last public beta build to be released prior to the Release to Manufacturing (RTM) final release, the blog post said.
The new features added to the SP1 are the Windows Server 2008 R2-related virtualization technologies, Dynamic Memory and RemoteFX. These features are intended to help customers who choose to deploy Windows through Virtual Desktop Infrastructure (VDI) by enabling a more scalable and rich user experience. There are no additional new features specific to Windows 7 for the home user.
Do note that the Windows 7 SP1 RC will expire on November 30, 2011.