The preview options (mobile, desktop, tablet) are currently only visible when editing a piece of content - in the right action drawer. We would like to also have the preview options available within the action drawer when viewing content.

You can find the wireframes on this page: https://doc.ez.no/display/PR/%28n01%29+Basic+Edit+via+tree+navigation
Wireframe in particular: https://doc.ez.no/download/attachments/7438520/n01_01.01%20Object%20%28container%29%20discover%20action.png?version=3&modificationDate=1368452439000&api=v2