Both MSDN and TechNet Plus subscribers have access to the same three core releases of Windows 7 Server Beta. The difference is that via MSDN subscribers can also grab a couple of checked beta builds of Windows 7 Server, namely Windows Server 2008 R2 Beta for Itanium Based Systems. You can also download Windows 7 Public Beta 1.

Here are the Windows Server 2008 R2 Beta Product Keys for Evaluation:

• Windows Server 2008 R2 Beta Enterprise (7000.0.081212-1400_server_en-us-GB1SXFRE_EN_DVD.iso)
  TFGPQ-J9267-T3R9G-99P7B-HXG47
• Windows Server 2008 R2 Beta Standard (7000.0.081212-1400_server_en-us-GB1SXFRE_EN_DVD.iso)
  2T88R-MBH2C-M7V97-9HVDW-VXTGF
• Windows Server 2008 R2 Beta Datacenter (7000.0.081212-1400_server_en-us-GB1SXFRE_EN_DVD.iso)
  QJJW-4RPC9-VGW22-6VTKV-7MCC6
• Windows Server 2008 R2 Beta for Itanium Based Systems (7000.0.081212-1400_serverenterprise64_en-us-GB1SIAIFRE_EN_DVD.iso)
  CQ936-9K2T8-6GPRX-3JR9T-JF4CJ
• Windows Web Server 2008 R2 Beta (7000.0.081212-1400_serverweb_en-us-GB1WXFRE_EN_DVD.iso)
  GT8BY-FRKHB-7PB8W-GQ7YF-3DXJ6

Download:

• 7000.0.081212-1400_server_en-us-GB1SXFRE_EN_DVD.iso (2850.0 MB)
• 7000.0.081212-1400_serverenterpriseia64_en-us-GB1SIAIFRE_EN_DVD.iso (2512.2 MB)
• 7000.0.081212-1400_serverweb_en-us-GB1WXFRE_EN_DVD.iso (2724.3 MB)