It was expected by the Microsoft to release official version for Windows 7 Service Pack 1 in the month of November 2010. As it was predicted that windows 7 SP1 beta version has leaked and soon available for the users at different file sharing resources to download it and use it also, according to GeekSmack. The beta release of Windows 7 SP1 is more effective and fast as compare to Microsoft Vista service pack.
The compile data for the build of leaked Windows 7 service pack 1 is 27th March 2010. It appears to be a recent compile build of leaked windows 7 sp1 beta version and build string of leaked version is 6.1.7601.16537.amd64fre.win7.100327-0053. No one is clear about the features this build will supports, whether it includes USB, Wi-Fi supports etc.
View Screen shots for the build of leaked Windows 7 Service Pack 1 beta version, according to GeekSmack