Mark O’Shea writes on TechNet that the licensing model for Standard and Datacenter were changed with Windows Server 2016, and he introduces the changes. The information is pulled from the Windows Server 2016 Licensing Datasheet, and if you need more details you can also download the Windows Server 2016 and System Center 2016 licensing FAQ. Spoil alert (tl;dr): you’ll be paying on a core-basis, instead of per CPU.
Mark o’Shea further writes:
The Windows Server 2016 licensing model includes both Cores + Client Access Licenses (CALs). Each user and/or device accessing a licensed Windows Server Standard, Datacenter or Multipoint edition requires a Windows Server CAL or a Windows Server and a Remote Desktop Services (RDS) CAL. A Windows Server CAL gives a user or device the right to access any edition of Windows Server of the same or earlier version. Each Window Server CAL allows access to multiple licenses of Windows Server.
After the General Availability of Windows Server 2016, the business model for Standard and Datacenter editions will transition from processor-based to core based licensing. Core-based licensing provides a more consistent licensing metric across multi-cloud environments, improves workload portability for Windows Server through benefits like Azure Hybrid Use Benefit, and helps remove friction across different licensing models.
Core based licensing: Windows Server 2016 Standard and Datacenter
Continue reading at the Microsoft Australia OEM Team TechNet blogpost: