Do you think human being will evolve even further?

Evolution is always at work. It's not a thing that spontaneously happens, it is always ongoing. In a species like ours changes are going to be very slow to accrue and largely hard to notice.

Also, evolution is not always something getting better. Life doesn't have a concept of better or worse. It's merely how well adapted it is to survive in its environment. But environments also change. So what is better changes. Better here is different from better there and better now is different from better then.