Windows Server 2019 will be available in the second half of calendar year 2018. Now, you can download Windows Server 2019 Preview Build 17744:
https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewserver (ISO: 4.22GB, VHDX:7.8GB)
Windows Server 2019 Preview is available in ISO format in 18 languages, and in VHDX format in English only.
To download Windows Server 2019, you need a microsoft account and join the Windows Insider Program.
Windows Server 2019 Product Key:
Introduction to Windows Admin Center
Q: When will Windows Server 2019 be generally available?
A: Windows Server 2019 will be generally available in the second half of calendar year 2018.
Q: Is Windows Server 2019 a Long-Term Servicing Channel (LTSC) release?
A: Windows Server 2019 will mark the next release in our Long-Term Servicing Channel. LTSC continues to be the recommended version of Windows Server for most of the infrastructure scenarios, including workloads like Microsoft SQL Server, Microsoft SharePoint, and Windows Server Software-defined solutions.
Q: What are the installation options available for Windows Server 2019?
A: As an LTSC release Windows Server 2019 provides the Server with Desktop Experience and Server Core installation options – in contrast to the Semi-Annual Channel that provides only the Server Core installation option and Nano Server as a container image. This will ensure application compatibility for existing workloads.
Q: Will there be a Semi-Annual Channel release at the same time as Windows Server 2019?
A: Yes. The Semi-Annual Channel release scheduled to go at the same time as Windows Server 2019 will bring container innovations and will follow the regular support lifecycle for Semi-Annual Channel releases – 18 months.
Q: Does Windows Server 2019 have the same licensing model as Windows Server 2016?
A: Yes. Check more information on how to license Windows Server 2016 today in the Windows Server Pricing page. It is highly likely we will increase pricing for Windows Server Client Access Licensing (CAL). We will provide more details when available.
See More on Windows Server Blog: https://cloudblogs.microsoft.com/windowsserver/2018/03/20/introducing-windows-server-2019-now-available-in-preview/
Windows Server 2016 Download
Windows Server Download: https://www.microsoft.com/en-us/evalcenter/evaluate-windows-server-2016