"I hope that we hear something about [Kingdom Hearts 4] sometime soon, I guess it's rumored that there's going to be another one," he said. "I'm always the last to know, because I'm the last step in the process. So hopefully, sometime soon, I'll be back in the studio finding out what happened to everybody."

Luckily, we were able to inform him that Square Enix did confirm that a fourth mainline game was on the way. Not only that, but Kingdom Hearts 4 co-director, co-writer, and lead artist Tetsuya Nomura said in a recent interview that the upcoming sequel would move the story of the series toward its end. With that news, Osment had this to say about potentially getting ready to say goodbye to Sora:

"You know, I'm sure that [Nomura] has great plans to wrap it up in a satisfying way. And I think that sometimes that's the best thing to do, even if you have something that you love and you feel like you want to play it forever, to tie it up in a nice way and not let it drag out beyond where the creator wants it to go. I think that's the way to go. And clearly there's many, many hours of gameplay for people to go back and revisit."

https://www.ign.com/articles/haley-joel-osment-reacts-to-potentially-saying-goodbye-to-sora-after-kingdom-hearts-4

Wanted to post the snippet of where he plays and talks about kingdom hearts, but this subreddit doesn't allow videos to be posted 😿