Windows Server Version 1709 (OS Build 17093.1000)
Today we are releasing Windows Server Insider Preview Build 17093 to Windows Server Insiders. This build is a preview build of the next Semi-Annual Channel release of Windows Server. For more information on the Semi-Annual channel, please see the Windows Server Semi-Annual Channel overview. Also available is Project Honolulu Technical Preview 1802.
Read more: http://blogs.windows.com/windowsexperience/2018/02/13/announcing-windows-server-insider-preview-build-17093-project-honolulu-technical-preview-1802/