Will they evolve? Will they change? In order for that to happen, it’s necessary that a reproductive advantage should apply to certain genetic types rather than other genetic types. If you look back 3 million years, one of the most dramatic changes has been in the increase in brain size. Our probable ancestor 3 million years ago of the genus Australopithecus walked on its hind legs but had a brain about the size of a chimpanzee’s.
Will that trend continue? Only if the bigger brained individuals are the most likely to have children. Is there any tendency if you look around the world today to say that the brainiest individuals are the ones most likely to reproduce? I don’t think so. Is there any reason to think that might happen in the future? Not obviously. You can’t just look back 3 million years and extrapolate into the future. You have to ask the question: What kinds of genetically distinct individuals are most likely to reproduce during the next hundreds of thousands of years? It’s extremely difficult to forecast that.