This is a minor nitpick of mine, but I don't like that they made what is presumably meant to be Mt. Tengan (Coronet) resemble Mt. Fuji on the box cover given that Mt. Shirogane (Silver) was already based on Mt. Fuji, which made a lot of sense given Mt. Shirogane's geographical location in the Pokemon world with relation to Mt. Fuji's real world location.
There's also the fact that Mt. Tengan is technically supposed to be a chain of mountains, while the box cover for this game depicts it as a single mountain.
There's a part in the reveal trailer where we see the female MC walking toward the camera with Mt. Coronet's peak in the background, and to the right of that we can see the mountain range dipping down and then rising again, so it's probably just that the new artwork doesn't provide as panoramic a view of the mountain as it looks.
And as far as its appearance is concerned, artstyle aside, it seems relatively consistent with how they've always depicted Mt. Coronet.