Bulletins gives companies a single space in which to share news, which they can organize into categories depending on the content type or relevant business department. Publishers to Bulletins can also use the app to keep track of certain metrics to see how their posts are performing. Although Bulletins will work with the Teams desktop client, the app has been mobile-optimized, making it a great way of sharing information with non-desk workers.
Link: Microsoft Teams is getting much more useful with these two new apps
via http://www.techradar.com