Looks like Samsung has an official screen protector for their S8/S8+ phones. It's not tempered glass, but it may satisfy those of us who are obsessed with protecting the screen.
https://www.youtube.com/watch?v=cQKnJsETNYQ
Official Samsung Galaxy S8 Plus Screen Protector - Twin Pack :: MobileFun.com
https://www.youtube.com/watch?v=cQKnJsETNYQ
Official Samsung Galaxy S8 Plus Screen Protector - Twin Pack :: MobileFun.com