The Stsadm command-line tool has been deprecated, but it is included
to support compatibility with previous product versions.
They are completely deprecated.
SharePoint Foundation is no longer available in the SharePoint Server
2016 release.SharePoint Foundation 2013 remains available for use.
SharePoint Server 2016 doesn’t support the standalone install
option.(See the first improvement in this article)
Excel Services and its associated business intelligence capabilities
are no longer hosted on SharePoint Server. Excel Services
functionality is now part of Excel Online in Office Online Server.
- The Work Management Service Application.
You couldn’t now aggregate tasks to a central location on SharePoint
because the Work Management Service Application has been removed.
- My Tasks and associated Exchange Task Sync features.
They have been removed because the Work Management Service Application
that is required for both features has also been removed.
The SQL Server 2014 Power Pivot and Power View add-ins for SharePoint
Server 2016 cannot be deployed or used in SharePoint Server 2016. To
deploy these add-ins you need to upgrade to SQL Server 2016 CTP 3.1
- InfoPath 2013 and SharePoint Designer 2013
It will be the last versions of those products.However, the support
for InfoPath 2013 and SharePoint Designer 2013 will match the support
life cycle for SharePoint Server 2016, running until 2026.
Find the complete list in my article at SIMPLY, WHAT’S NEW AND DEPRECATED IN SHAREPOINT SERVER 2016 ?