That article seems to think it will. I’m not so sure.An In-Depth Look At The Donkey Kong Coaster Opening at Universal Studios Japan in Spring 2020 - Theme Park University
Correct me if I'm wrong, but I don't think that Donkey Kong is being built at USJ?
It could be their phase 2, as the expansion plot is exactly the right shape and size. But they could instead choose a different property that’s more popular in Japan. I’m not sure yet myself.