The Surface Neo may have never made it to market, but it has made a cameo in Red Notice, a new movie starring Ryan Reynolds, The Rock and Gal Gadot. The cancelled device has also leaked in several hands-on photos showcasing the Surface Neo next to the smaller Surface Duo.
https://www.notebookcheck.net/Surface-Neo-prototypes-appear-in-hands-on-images-and-in-new-Netflix-film.579339.0.html