Interesting to point out in the video I watched discussing DisneylandForward around the 19 minute mark:
Ken Potrock, President of Disneyland, has said that "Avatar is at the top of our priorities." Interesting.
Way of water is the third highest grossing film of all time and with three sequels lined up so of course they want to strike while the iron is hot. Hopefully a location and timeline is provided at D23.
However there was a rumor out of Disneyland Paris claiming a version of Pandora is coming to WDSP in 2030. I am going to guess DLR's would probably open around the same time.