I’d assume it’s probably something for land, beauty and the beast is really the only expansion TDL has got in terms of increasing its overall footprint and while the expansion is gorgeous it’s basically just making a generic thoroughfare into a sub land with a great ride
Neither park really has much space left, land could eat the car park but that’s about it, I’d imagine that’s likely what’s it would be, the Japanese are too rigid on their love of the park in its existing form for it to be a massive overhaul that doesn’t change the current footprint