Most content will be black barred on the sides resulting smaller content than previous 5.7" (16:9) devices. One benefit though could be touch screen controls, provided they can be mapped outside of the actual active display area. Currently touch controls are in the way for a lot of games and emulators to the point of impacting play-ability. If you could custom map controls in settings to use the black bar areas, this would reduce thumbs being in the way for gaming.
I noticed this when testing some emulators out.
I noticed this when testing some emulators out.