Could 18:9 displays become the new smartphone standard?

The latest flagship smartphones from LG (G6) and Samsung (Galaxy S8) have both switched to a 18:9 display format. Could they be blazing the trail for a new standard in smartphone screens? 

This new format – exactly twice as long as it is wide – offers a space-saving aspect ratio that lets smartphone users place two identical square panes side by side, using two applications simultaneously with Android's new multitasking functionality, for example. But this format is by no means new.