You can download the x64 ISO or VHD through here.
The Windows Server 2012 Release Candidate is available in Chinese (Simplified), Chinese (Traditional), English, French, German, Japanese, Korean, Portuguese (Brazil), Russian, Spanish, Swedish, and Turkish. The VHD is available in English.
Some documentation to get you started:
More documentation related to Windows Server 2012 RC here.
Other related releases:
- Windows 8 Release Preview
- Windows Management Framework 3.0 RC (e.g. PowerShell)
- Remote Server Administration Tools for Windows 8 Release Preview
Note: Like with all pre-release bits: it’s not recommended to use this in your production environment, so use them in a lab or testing environment only.