Neowin published a story that Microsoft has released Windows Server Insider Preview build 20170 without a change log.
Windows Server Insider Preview build 20170 is now available
In addition to a new Windows 10 build in the Dev channel, Microsoft has also released build 20170 of the Windows 10 SDK preview, as well as Windows Server. The changes are unknown.
Windows Server Insider Preview build 20170 is now available
