Depending on when Sesame Street is expected to open/start construction I could see SeaWorld finally renovating JTA. If Sesame is the 2020 addition, that leaves next year with no announced or leaked additions. A renovation of JTA, not dissimilar to last year's VR Kraken and the Dolphin Nursery, could be an off-year addition with some type of added gimmick. Plus Infinity Falls would allow for JTA to be closed without having a significant impact on the park.