Question about visual effects

Hello. After recently watching a few movies with my kids (The Lion King, Mufasa, Sonic 3 and a few others), I am genuinely wondering, can movie animations get even more realistic than what they currently are? I am amazed by how realistic animations look nowadays. I have zero experience with graphic and video design and I thought I would ask here as I am wondering what is in the making technology wise to make graphics even more realistic in the future. Thanks