The Recent Announcements area in Home displays announcements from all of the sites in which you are enrolled. You may use the drop-down menu to view All items, Public items only, or items By Group. (You must be a member of a group in order to see group announcements.)
You may select either All, Public, or By Group from the View drop-down menu to customize the display.
Note: By default, you will only see announcements that have been posted within the last 10 days in this location. (If you wish to see announcements posted within the past year, you should click on the Announcements link in the Tool Menu.)