As very much expected Beta Build 7601 of upcoming Windows 7 Service Pack 1 release is leaked on internet and is readily available for download via torrents, Rapidshare, Megaupload and HotFile links. Having a compile date of March 27th the leaked beta-build with string - "6.1.7601.16537.amd64fre.win7.100327-0053" is not intended for use on production computers and users are advised to download it from the official source only when this is pushed via Windows update.