NOTE: This feature is currently being rolled out to the Apple and Google stores and should be available in the next day or two. However on desktop you can try it out right now (after enabling - see below) at https://vger.app/!
This is currently in BETA, and is turned off by default. On tablets and desktop, you can turn it on in Settings -> Appearance -> Layout. (The setting won't show up on phones.)
The right column is dedicated to viewing a specific post. The left column is for the regular navigation of the app.
Pro tip: On macOS, I recommend adding Voyager to your Dock (https://vger.app/) with Safari's new "Add to Dock" feature! Check out the above screenshot - it's quite slick.
Enjoy and let me know what you think!
Working on an iPad mini. It'll get some getting used to. Been so used to the single column wide mode.