Every time a piece of media is newly uploaded in Media Manager, the end user will be notified on the mobile app via the What's New button the next time they press the "Check for Updates". The badge icon will display the number of new files.
When you access the area, the files will be displayed.
To remove the badge icon and the "new" banner on the file, press the "Mark as Seen" button. Files will remain in the "What's New" section for 6 months and then begin to drop off after that time. The older the file, the smaller it will be when scrolling through.