Are you talking about eugenics? Because we've been there, and it turns out not to be a nice neighborhood.
What isn't explicit? Why do people think the only way we can evolve is through -- basically -- becoming cyborgs (by giving up the humanity we have not fully explored)?
You talk about biological evolution, but you're not talking about eugenics. Do you mean "will we keep evolving naturally" then? I would think so, if we face evolutionary pressure, but I'm not a biologist. Then below you describe something that sounds like Nietzschean self-overcoming, but that has nothing to do with evolution and arose out of a creative misunderstanding of it.
...We are a species capable of deciding. We can choose how this goes. I do not think it is viable nor intelligent of us to give up a humanity we have not explored. That does not mean forcing anything that isn't there. It means using it to our advantage. We have destroyed so much without altering ourselves genetically, then it stands to reason we can create just as much. That is all I meant.