Each time an asset is uploaded or updated in Media Manager, the end user will be notified in the mobile app via the What's New button. This information will come through when the app has been updated, either automatically or via the 'Check for Updates' button on the Settings page. The What's New icon in the side menu will display the number of new files via the badge number.
When users tap into the What's New section, the files will be displayed. When users have viewed the new media file, the media item will disappear from the page. Users can tap the 'Mark as Seen' button in the top right corner of the app, and this action will remove the badge numbers from the icon in the side menu as well as the media from the What's New section (they will then only reside in the categories now):