The Microsoft OneDrive for Android app has a new update rolling out that brings several improvements in photo editing and storage. The new build is version 4.5 for those keeping score at home and is in the Play Store now.
Within the OneDrive app, this update allows you to crop, rotate and chose filters of photos with the improved Scan feature. There is also improvements to to the navigation of the Photos view in the app which will make it quicker to search through your photos. This will be particularly handy for those who have a lot of photos stored in OneDrive.
Finally, and perhaps the biggest new features, is the ability to save photos directly to OneDrive within the App. What this means is that you can save the photos online and not on your phone, saving your storage space on your device. In practice, this seems to function a bit like the sync feature of Google Photos.