If you want to have a play with the various new preview releases of Windows, here are the links to resources and information on where to download these previews.
If you have a MSDN or Microsoft Azure subscription, you can get them directly via the respective site portals.
Otherwise, here are the public links.
- Windows 10 Preview
- Announcing availability of Windows Server Technical Preview and System Center Technical Preview
- What’s New in the Windows Server Technical Preview
- What’s new for Hyper-V in the Technical Preview