New concept art was released for the new Marvel ride opening in 2019:
"Moana: A Homecoming Celebration" premiere at the new Jungle Junction:
New castle concept art which features slight changes:
Also Hong Kong Main Street Gazette confirms that the Frozen themed land concept art that includes the roller coaster is the latest concept art and that the coaster will be replacing the indoor sleigh ride which was shown in earlier concept art.
Source: https://hkmsg.blogspot.com/2018/05/blog-post_24.html