Asus has silently refreshed its flagship ROG Phone 5 gaming phone with the ROG Phone 5S. The ROG Phone 5S comes in 5S and 5S Pro variants. The improvements are minimal with the primary upgrade being the use of the latest Snapdragon 888 Plus SoC and a color ROG Vision display for the ROG Phone 5S Pro version.
https://www.notebookcheck.net/Asus-confirms-ROG-Phone-5S-and-ROG-Phone-5S-Pro-with-Snapdragon-888-Plus-will-replace-current-ROG-Phone-5-models-when-stocks-deplete.555570.0.html