The updates are making the apps universal ones - meaning these versions will run on both Intel and Apple Silicon Macs, so any upcoming updates or features will be coming at the same time for both platforms.
The apps getting the updates are Word, Excel, Outlook, PowerPoint, and OneNote. If you’ve been using Microsoft Office on an M1 Mac, it’s about to get better - Microsoft is announcing an update today that brings native support for Apple’s new custom chip architecture to the Windows productivity suite.