Some Samsung Galaxy S8 devices have had issues with red tint on the display, and now the company has officially released an update to fix it. The update is currently rolling out in South Korea but will be pushed to other countries soon.
The update adds a setting for display color balance, which you can use to tune the color temperature to your preference. You can also adjust the screen edge color balance separately.
Hopefully the update automatically adjusted the display color temperature so that users won’t have to fix it themselves (which is a task not suited for many casual smartphone users).