Upgrading to this version
Unity Forma 3.0 includes several new features to support WebGL and builds on mobile devices, including a JavaScript API for WebGL and improvements to usability and workflow.
When you upgrade, you must pay special attention to the following:
Upgrading Hotspots
If you created Hotspots in a previous version of Unity Forma (earlier than Unity Forma 2.0) by adding them to the Project in the Unity Editor, you must manually upgrade them or recreate them in the new Unity Forma interface.