The latest release of Azure AD Connect now officially supports SQL 2016 and Windows Server 2016, which also includes the ability to manage ADFS 4.0 (part of Windows Server 2016)

You can download the new release here https://www.microsoft.com/en-us/download/details.aspx?id=47594&751be11f-ede8-5a0c-058c-2ee190a24fa6=True