As Windows 7 and Windows Server 2008 R2 share the same code base, thus the Windows Server 2008 R2 RTM will have the same build version as Windows 7 RTM, which is build 7600. With the leak of Windows 7 x64 RTM Build 7600, Windows Server 2008 R2 is leaked to Internet too, albeit not in installation ISO format, and is in VHD virtual hard disk image format.

The leaked Windows Server 2008 R2 RTM has the build version of 7600.16384.amd64fre.win7_rtm.090710-1945 (6.1.7600.16384.090710-1945), and is of 64-bit (x86) Enterprise edition.

Windows Server 2008 R2 RTM Build 7600

Download 64-bit Windows Server 2008 R2 RTM Build 7600

RAR File Name: 7600.16384.amd64fre.win7_rtm.090710-1945.serverenterprise_en-us_vl. serverenterprise.vhd.wzt.rar
RAR Size: 2,182,940,856 Bytes
RAR SHA1: 30559CECBCDB628D0926D1D4A0F77925BAC0C9C6
RAR MD5: 5A8EE7F772482188E9A2149B250B678C).

VHD File Name: 7600.16384.amd64fre.win7_rtm.090710-1945.serverenterprise_en-us_vl. serverenterprise.vhd
VHD Size: 6,857,337,856 Bytes
VHD SHA1: EA13B569AD4EA4F34955D1FB8A7ADFF8A30297E6
VHD MD5: EC65EE9F3B18F7A232F8B0073A02216A

Torrent: MICROSOFT.SERVER.2008.R2.ENTERPRISE.WIN7_RTM.7600.16384.090710-1945.X64.VL.ENGLISH.VHD.torrent

Note: 7600.16384 is not the final Windows 7 and Server 2008 R2 RTM build

Note that VHD image cannot be used to install a fresh clean copy of Windows Server 2008 R2. It’s meant to mount on a virtual machine that supports VHD format, such as Windows Virtual PC.

Update: Windows Server 2008 R2 RTM Unoriginal ISO