This trend has caught on mostly in the United States, but it'll be no time until it reaches the other half of the world!
Salted-caramel dishes are one of the few things that I believe are a legitimate blessing that I've gotten behind on, especially within drinks too. Most notably, Starbucks does their iconic salted-caramel mocha during the fall-winter season (though I don't know if Starbucks outside the Americas happen to do it). This is an element you will see with most deserts such as choclate bars, cheese cake, and from my experience it is beyond indulging.
On another note: You will know that a dish is beyond Millennial when it ends up in your soap as well, such as Lush's Sea-Salted Caramel Soap, to which a link is posted.
Picture: "Salted Caramel Apple Pound Cake" by EvilShenanigans, licensed under CC BY-NC-ND 2.0