View Notifications
The View Notifications feature is used to display important information such as release announcements, hot-fixes, webinars for user groups, and events. If available, new notifications are downloaded when Revit is started, however, the button is not changed until the Revit is closed and re-opened. The active notification button is displayed throughout the entire session and does not change until notifications have been viewed and Revit is closed and re-opened.
Typically, notifications are links to a download page or website, click the notification panel to open the link.
Active Notification button
Displayed when new notifications are pushed.

Inactive Notification button
Displayed after active notifications have been read.

The red dot indicates that there are new notifications available to be read.