Imagine it like this.
Pokemon Crystal is on the way with minimal information, and Ash catches an Eevee in Johto.
This Eevee seems to be extra-special compared to others, being stronger than usual and not having a preference for any of its evolutions at the time.
Merchandise, CoroCoro and other sources hint towards a THIRD new Eeveelution being revealed like it's going to be a huge thing.
After 2-3 months of anticipation, the Eeveelution is finally revealed.
But it's just Flareon with Jolteon's Fur Collar and colored white for seemingly no reason.
THAT is Lycanroc-Dusk.
