Like the new iWork, Office 2016 is cloud-connected, so users can get the documents recently worked on another device to continue to work... (To some of us, it sounds like the Continuity concept in OS X Yosemite 10.10).
Office 2016 for Mac take and integrate with Mac's Full Screen view, Multi-Touch gestures as well as full Retina display support.
Office 2016 for Mac is currently available for Office 365 subscription customer. Office 2016 for Mac will become available as a one-time purchase option this September
More detail at office.com/mac
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