The next release of Windows Server, Windows Server 2012, will offer businesses and hosting providers a scalable, dynamic, and multitenant-aware, cloud-optimized infrastructure. It securely connects across premises and helps IT Professionals to respond to business needs faster and more efficiently.

Windows Server 2012 Release Candidate (RC):

• Takes you beyond virtualization
• Delivers the power of many servers with the simplicity of one
• Opens the door to every app on any cloud
• Enables the modern work style
  

Need more information? See the product details page.

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And so the Windows 8/Windows Server 2012 RC release process begins...

I dig that they are releasing this as both an ISO and VHD. NOTE: At the time I'm writing this, I'm not able to download the VHD, instead getting a 404. The ISO is downloading fine for me, so this is likely just a release day thing...