In the future as everyone genetically modifies their bodies in whichever way they choose the concept of evolution is going to become a foreign one to the human race.
It may not be "biological" evolution but in a way genetic engineering is still evolution, if artificial.
Evolution can refer to any sort of progressive development, so unless we decide that the best way to engineer our bodies is to reduce ourselves back to single cell organisms, we will still be evolving, simply outside of the constraints of nature.