Microsoft announce that Windows Server 2019 is available for download from VLSC: http://bit.ly/2IzPATQ.
There’s also a Licensing Datasheet available where you’ll see that the basic licensing model is unchanged: servers are licensed per core with packs of 2 or 16 Core licences available, and a minimum of 8 Core licences assigned to a processor, and 16 to a server. CALs are required for users or devices accessing the services of the server.
The datasheet also confirms that there’s a 10% price increase for Windows Server 2019 Standard Core licences, and gives a nice overview of the Servicing Channels.
Find the datasheet here: http://bit.ly/MSLicensingGuides.