Microsoft released Office Mobile app April feature update for Build 17.8067. This update is available for both PC and Mobile and it is for Sow Ring Insiders .
The latest update brings Collaborative Editing & Open more files features for Excel and Insert recent links feature for PowerPoint, Excel and Word.
Work with others at the same time in your workbook.
Insert recent links
Easily attach hyperlinks to recent cloud-based files or websites, and create meaningful display names for people using screen readers.
Open more files
You asked for it! You can now open files that contain ink.