With just a day left for the official release Windows 8.1 Preview to the public, Microsoft has made available for download the Preview version of Windows Server 2012 R2 to TechNet and MSDN subscribers. That is, PC users who have a TechNet or MSDN account can now download and install Server 2012 R2 Preview without waiting for the public release.
The download size of Windows Server 2012 R2 Preview (x64) is 1769 MB and is available as an ISO file. The Server 2012 R2 Preview download reveals that build number of Windows 8.1 Preview is 9431. In addition to Server 2012 R2 Preview, Server 2012 R2 Datacenter Preview, Datacenter Virtual Machine Preview, and Datacenter Virtual Machine Core Preview are also up for download.
Windows 8.1 Preview likely to appear in MSDN and TechNet subscriber download section in a couple of hours. Get ready to upgrade Windows 8 to Windows 8.1!
We will update this article once Windows 8.1 Preview appears in TechNet and MSDN account.
Update: Server 2012 R2 Preview is now also available to the public. Visit the below mentioned page to download Server 2012 R2 Preview.