I don't know about an official announcement but we know his next game is another modern setting and he's talked a ton about a potential sequel(with Amane as the mentor to a new protagonist), so it's pretty likely at least.
@ryosuke341 https://ci-en.dlsite.com/creator/4551/article/734438 https://ci-en.dlsite.com/creator/4551/article/760716 Well, he talked about it in more articles