Office 2016 works on Windows 7, 8 and Windows 10 PCs, laptops and tablets. Users must uninstall Office 2013 in order to use the new preview; the two versions cannot run side-by-side. Also worth knowing: Microsoft will be updating the public preview regularly, both before it is made commercially available and beyond.
Microsoft officials reiterated that the Office 2016 suite for Windows desktops will be available in the fall of 2015, the same timing officials had shared previously.
Microsoft also is working on touch-first/Universal versions of its key Office apps (Word, Excel, PowerPoint, OneNote and Outlook) for Windows 10 devices that will be available for download via the Windows 10 Store. A second version of those touch-first mobile apps for Windows 10 Mobile are expected to be available for testers early this week.
Microsoft has been testing privately Office 2016 since last year. Testers have said they've seen relatively few brand-new features in the coming suite.
Microsoft is playing up the cloud connectivity enhancements to Office 2016 as one of its key selling points. The new Office 2016 suite also will include several enhancements such as document coauthoring, new "Tell Me" navigation support, integration with Power BI, and more lockdown/rights management capabilities.