Evolution is a process which goes on forever as long as there is life.
If we were put back into the wild for thousands of years without technology, we may evolve higher intellect, speed, or even strength in order to over come new obstacles perhaps along with an improved immune system. Who's to say our environment will always remain the same.
Humans right now are still changing. It's an inevitability due to mutations in our genome and the genome of other animals but in the case of other animals, natural selection is still selecting for which can survive predators, but for humans it's a lot different than before. The selective factor is not so much wild animals/natural diseases, but more for our appearance - similar to peacocks.
Evolution is like a wave. Changes may come suddenly or very slowly. Right now it's not really fast (but of course it MUST change. Africans for example are more likely to have sickle cell anemia because of it's side effect which is being immune to malaria). When the human population reaches it's peak, there will be a different selective pressure that will cause faster changes.
Now, this is just on Earth. In other to combat the problem of overpopulation, we may have to go off to different planets. Just imagine the extreme selective pressures of that!
No, we are certainly not at the end of our evolution and it may even be human facilitated. We have genetically modified crop. Perhaps one day it would be humans.