The Microsoft Windows server 2019 which was preview has been released officially today. It also bundles the new Remote Desktop Services 2019 which is expected to have better user experience and improved security. The Web Client version is bundled with RDS from with the initial release itself. The Windows Server 2019 image is available for download but unfortunately the image file forevaluationdownload is not yet available. Microsoft says the media is on progress and will be available for download shortly.
Read more at Microsoft blog to know about the new Windows Server and RDS 2019.