Windows Server 2019 version info

Thus, the build number of Windows Server 2016 is always 14393, and any new update for it will be only change revision number, such the version format should be 10.0.14393.***?

And the build number of Windows Server 2019 is staying on 17763? but it is not re-released yet; the first build number of Windows Server 2019 is 17623?

 and now my .net code most like the below, that working safe?

if (VersionHelper.IsWindows10OrGreater())
{
       _isWindows10OrGreater = true;

if (_isWindowsServer)
{
          if (Build > 17763)  //???
              _productShortName = "Windows Server 20XX";
         else if (Build > 17622) 
              _productShortName = "Windows Server 2019";

                else

                     _productShortName = "Windows Server 2016";
}
else
{
        _productShortName = "Windows 10";
}

Thanks,