Kanban cover thumb image seen on homepage of huly.io ... but is this a feature?

[ReessKennedy]

On the homepage for Huly I see one of the Kanban cards appears to have a cover thumbnail, similar to how Trello allows cover thumbs. I really LIKE this and have been wanting it and wonder: Is this already an existing feature? Given it's on the homepage I started to think it likely is and I just don't know how to activate it!

Thanks for the assistance!