Nothing is green lit and there are lots of competing concepts. First, PotC:BftST is the first ride tech in a long time that TDO has said, "Oooooo, I want that!". I have heard 2 different rumors about bringing that ride tech to WDW and both involve Indy.
The first rumor I heard was the boat ride replacing the stunt show and the area being rethemed to an Indy land that would include the Raging Spirits coaster from Japan replacing Star Tours. And Backlot Express becoming a Outpost themed QS and the area would include another "Indy" themed bar similar to The Hanger.
The second rumor I heard is Dinoland becomes South America with scattered animal exhibits. A new take on the IJA replacing Dinosaur. Raging Spirits replacing Dinorama. And the boat ride replacing Nemo. It is an Amazon River attraction with live animals at the beginning then enter the show building which is an adventure to Coronado: The Lost City of Gold. The Amazon River ride would not be an Indy ride. Restaurantasaurus becomes an Outpost QS. And of course a "Hanger" type bar, Jock wasn't mentioned, but it being the defacto headquarters of S.E.A. was. This South America land rumor even goes as far as to include an adventures club-esque hotel similar to the Star Wars thing.
If the Indy IP moves to DAK, and Star Tours is axed. That frees up huge chunk of land in DHS. Echo Lake, the Sounds Dangerous building, Star Tours, Backlot Express, and Indy. And that's where the plan ends. "Yeah, big chuck of land, great, and.....". No clue what they want to do with it. Not me, them. They don't have a plan for it yet. Not even any solid pitches.
TDO and Burbank actually like the DAK plan for multiple reasons.
1. Overlaying Dinosaur would be an extremely cost effective way to bring in a new E Ticket.
2. Dinosaurs GSAT are middle of the road. "Meh", "Too Scary", "What dinosaur ride?" Being the most common comments. Apparently a surprisingly large number of guests never even realize it's there.
3. They could do the South America land in phases. Redo the land with Indy, Raging Spirits, the animal exhibits, and Food/Beverage/Merch. Leaving the Nemo replacement until phase 2.
4. Frees up a lot of contiguous acreage in DHS.