1) SharePoint Foundation (free version) wont be available with SharePoint 2016
2) Standalone installation mode is not available, “MINROLE FARM TOPOLOGY” is available when doing farm installation
3) FIM is not supported to sync AD information, it supports “Active Directory Import” and “Microsoft Identity Manager”
4) Excel Services is not available, we can have it via “EXCEL ONLINE”
5) Trusted data providers, trusted file locations, trusted data connections not available
6) TAG and NOTES feature is also not available
7) STSADM.exe tool is not supported, have to use POWERSHELL