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Back to Microsoft Office.
Office 2016 was released on 2015-09-22. New features include saving files directly in the cloud, Insights, etc. A version for Mac was released later, on 2016-07-09.
Office 2016 cannot coexist with Office 2013.
As with earlier versions, an MSI version, as well as a C2R(Click-to-Run) version, are available. The MSI version is only available via volume licensing.