Never heard of ytl8. But 14C28N is a steel designed specifically for knives. It's one of the most well-rounded stainless alloys out there. Decent corrosion resistance, easy to sharpen, takes a very sharp edge, and holds it acceptably well. And it's tough, especially in comparison to many other SS alloys. All of the Sandvik alloys are clean steels, with very few inclusions, and a fine grain structure. These are things I know.
I'm not a steel snob, by any means, but somebody else can try this new steel. It might be deep-fried beer-batter-dipped andouille sausage on a stick, or just another corn dog. I really don't care.
We already have Magnacut, the triple cheeseburger, with double bacon!
EDIT: I should mention, I like 14C28N quite a bit, it's the steel in my EDC folder for the last couple of years. And I like the S35VN in my EDC fixed blade. These do everything I need an EDC type knife to do. I don't need super-steels, just good ones.