Newsarama has an interview with Dan Jurgens about the current story arc in Batman Beyond:
https://www.newsarama.com/42450-dan-...an-beyond.html
In my eyes, that sounds more like Jason will only appear in flashbacks. But I could be totally wrong.
How old would Jason be if he is/was still alive in Batman Beyond? The interview says Bruce is around 75-80. But Dick looks like 60 at most and Damian like around 30.
That's a little confusing. But I'm more curious to see if Jason has kids in that universe.