The new visualization mode can be activated from tool "3d View".
Select "Cardboard option" and click "OK" button. You view your 3d world in front of you!.
How can I control the camera?. Left and right movements, up and down move the camera's look at position. To move the camera position, you have to tilt your head clockwise to move the camera towards look at direction, or anticlockwise to move the camera backwards look at direction.
Please, report any problem with this new functionality.