Microsoft released new technical preview of Windows Server 2016 (it’s almost official name of the next version of Windows Server) at Ignite. You can download ISO and VHDs from:
Review the following articles on Technet (were updated during Ignite sessions)
An IMPORTANT NOTE regarding the ISO image for Windows Server Technical Preview 2: If you encounter a black screen during the install process (at the stage where the installation is complete and you are prompted to set the administrator password and logon), press Ctrl+Alt+Del which will return you to the screen where you can set the password and logon. There are other situations where you may need to press Ctrl+Alt+Del to advance during logon, see more details in the Release Notes.
2. Register, then download and install the preview. Technical Preview 2 expires October 15, 2015.
3. Receive email with resources to guide you through your preview
When moving from Windows Server Technical Preview to Windows Server Technical Preview 2, you will need to uninstall the previous version for a clean installation of Technical Preview 2.
Upon installation, you will be prompted to activate. A product key is not required for the ISO installation.
VHD installation requires the following product key: