And more importantly, they’ll be available as part of the Technical Previews of Windows 10 that Microsoft is publishing “in the coming weeks,” the company said. Microsoft said that the Office for Windows 10 apps, like their counterparts on iOS and Android, would be free to use (and preinstalled) on Windows 10 phones and small tablets-no Office 365 subscription required, apparently. After describing the next version of Windows on Wednesday, Microsoft on Thursday unveiled the next versions of Office: Office for Windows 10, and the standalone Office 2016 desktop suite.