Updates happen in two primary ways, web updates and local add-in updates
1. Web Updates
Web updates happen automatically when you refresh while viewing Content Catalog or upon login. You can see the release number and release notes in the bottom left of Content Catalog as seen in the image below.
Selecting the release number will show you more details and choosing release notes link will give even further details from recent releases.
2. Add-in Updates
A. Users update the Content Catalog add-in themselves:
By default, Content Catalog will automatically update following a new release for any Autodesk integrated products (Revit, AutoCAD, etc.). With all design programs closed, Content Catalog will automatically update at the next launch of the software from either the desktop shortcut or from the Start Menu.
B. Your IT department does it for you:
In instances where a company’s IT department deploys the software, the automatic updates are turned off and a new deployment from IT will be needed to get the latest installer of Content Catalog installed. Company Admins should be notified of new updates as they are released.