Japan Display announces new 6-inch display with 18:9 aspect ratio
Since Sony often uses JDI as a source for its screens, we would not be surprised to see this display used on Sony's next flagship Xperia model. After all, Sony is one of the three major companies that are part of the JDI joint venture. The other two are Hitachi and Toshiba. Besides, the 18:9 aspect ratio will probably be growing in usage on 2017-2018 flagship handsets thanks to the decisions made this year at LG and Samsung. Both of these companies went with the 18:9 aspect ratio on their new flagship models instead of the 16:9 aspect ratio previously used.
The 18:9 aspect ratio is great for viewing video because it reduces the size of the black borders found on the top and bottom of the screen when watching movies and television shows. Even though there is no guarantee that the next Xperia flagship model will use this display, it would seem that everything is lining up perfectly for it to happen.
source: JDI via Xperiablog.net