Currently, Microsoft Office 365 applications including Word, Excel, PowerPoint, OneNote etc. are available on Windows Store for that devices who running on Windows 10 S. Notably, while the Office itself is currently not in a preview, its new install and update processes are in a preview period.
After the preview period is over, users on other Windows 10 devices will also be able to buy and install Office using the Windows Store.
If you are on Microsoft Office 365 Personal, Office 365 Home, Office 365 for Education Plus or Office 365 Education E5 plans, you will be able to use Office in the Windows Store during the preview period on Windows 10 S. After the preview period gets over, other editions including ‘Home & Student 2016’ and ‘Office Home & Business 2016’ will be supported.
Those who buy Surface Laptops get a free one year Office 365 Personal subscription which will allow them to download and use the “Office in the Windows Store” apps.
Those with Office 365 business plans are advised to upgrade their Windows 10 S devices to Windows 10 Pro and install a business version of Office, as “Office in the Windows Store does not currently support Office 365 business plans or volume licenses..
According to the sources, “Word, Excel, PowerPoint, Outlook, Access and Publisher” will be part of “Office for the Windows Store.” (Outlook, Access, and Publisher won’t be available in preview for Office 365 Education plan users, however, the company further says that in 2018, Office 365 plans for business customers will also be supported.
I am also hearing that Microsoft is currently shifting its focus away from the Office Mobile apps for Windows 10, but Redmond still plans on releasing new updates for the Office Mobile apps every month. The company is moving focus away from Office Mobile on the desktop, but they will continue to improve the app for tablets and smartphones running on Windows 10 which is pretty great to hear.