When it was first revealed through video clips that Pokemon: Let's Go, Eevee would be the next Mainstream Pokemon Game, it was widely believed that Pokemon Abilities would cease to exist within this one and only game. Pokemon Abilities didn't exist back when Pokemon Yellow was first released decades ago, and most players thought it would only makes sense that they wouldn't in this game either since it's basically a remake of said game. This was later confirmed when players in certain regions were given the chance to play a Demo Version of the game.