Dumbo doesn't appear to be "shot4shot" and TLK has atleast 1 new song, but is more or less a "life-like" remake even if they add a few new scenes.
It will bring in the nostalgia crowd who will in turn bring in their multitude kids their friends, and their multitude of kids, and then all their parents too.
If it weren't for A4 launching 2 or so months before it, I would guess this as easily the Top Grossing movie of 2019.
But Disney is already on OVERLOAD next year as it is.....
Dumbo, Aladdin, TLK, Capt. Marvel, Avengers 4, and not even mentioning whatever else they have planned for next year to fill all the gaps.