JWE support will sooner or later come to an end, there is no denying nor stopping that. I do not know if that leak is true or not, so it is hard to see if such a plan is in action.
But like how others have mentioned, the game will still be supported and that itself makes me pretty contempt. JWE has turned into a fun game but it desperately needs the polish to get all the bugs and remaining lack of QOL out of the way, a means to improve what we already have instead of adding more without working on the foundation of the game. I do hope that the implementation of escapes, extra combat , and non-violent interaction will still be considered for JWE 2020 plan. JWE 2 could have a lot of proposed content and hopefully a more utilized engine to make the experience a whole lot fresher if it were to happen, so cutting content in order to make the experience newer feels a bit off, especially if it is content that is possible in the current JWE engine.
This does bring up some questions in what the DLC are going to be. What would 2020 bring? And how would the transition from JWE 1 be to JWE 2? I still think JWE would have support this year but it will be safer to assume that it won't be as impactful as 2019. Then again, I am happy to be wrong on this Frontier!