Just after the leak of Windows 7 RTM,Windows Server 2008 R2 has been leaked and is available for download on various torrent sites.
Here are the details of the build
MICROSOFT.WINDOWS.SERVER.2008.R2.RTM.X64.OEM.ENGLISH.DVD
7600.16385.090713-1255_x64fre_server_en-us_OEM-GRMSXFREO_EN_DVD.iso
SIZE: 2,996,783,104 byte
SHA1: 515A9E7F4C7DF41AACA6872CB806DABD15BF7D64
MD5: 4FFB420543F5A9265BE5EEDB6C4E55A2
CRC: 137A659F