This latest rumor claims that the upcoming refresh of the iPad mini will feature a design akin to the 4th generation iPad Air. Just like its big brother, the iPad mini will supposedly lose the home button and feature a much bigger display with narrower bezels, resulting in a more modern appearance.
https://www.notebookcheck.net/Apple-s-new-iPad-mini-will-reportedly-ditch-the-home-button-and-feature-a-8-3-inch-display-with-narrower-bezels.552523.0.html