Priya Mehta, Program Manager on the Apple Shared Experiences team, is pleased to be able to tell you about File Cards, a new way to preview Office Mobile files in iOS without opening them.
File Cards offer a rich, modern way to consume Office content on your iPhone or iPad. This view features:
Contextual information (who shared the file and the context in which it was shared)
Quick actions that allow you to share or save the file offline
As part of this rollout, File Cards in Office Mobile will be available for your Word, Excel, PowerPoint, and PDF files stored in your OneDrive for Business and Personal accounts. Word and PDF files stored locally on your device will be supported in a future update.