It truely depends on your working definition of evolution.
If we're talking purely natural physical evolution, and not even considering genetic engineering and cyber enhancements, then we're going our usual course, and we'll likely be a dead species before we move on. We've reached that critical mass where our environments dont control us, we control our environment. We're still animals, but we're the masters of this world, something our large brains have given us the opportunity to achieve. We are at the utter top of the food chain.
From here on in, we control evolution. Natural physical evolution is still occuring, but at a ridiculously slow rate compared what we're able to achieve and control using engineering. Besides, we are not competing with other species anymore. We've won the battle against them. We have guns, pesticides, you name it, we can kill it and totally eradicate it. Since we're the masters of this world, selection is going to occur within us. It not species vs species, its race vs race, society vs society.
Even though one can argue that ethnicity and race is culturally based, you cant tell me that africans look the same as asians or as europeans. Equality is great and all, but realize that theres some physical differences there. Those differences run deep enough that you can tell a southern american from a northern american just by looking at them.
Its not going to be selection for who's the strongest, or who has the best eyesight. Its ALL about intelligence. Our intelligence allows us to make up for any other deficiencies. And since we're a social animal, and we share our knowledge, what one man creates, we all share in. Someone figures out a cure for cancer, and everyone gets to take it.
Ex. Stephen Hawkings (sp?). Far from being able to survive in the wild, but his intelligence is incredibly respected, and he's contributed to our knowledge in ways most of us could ever dream of, and he's bound to a wheelchair, and can barely even talk. I'd say he's quite fit for survival, even given his obvious physical disadvantages.
Intelligence is what gets us ahead, as a species, and among our own species. 3rd world countries arent starving because they arent physically strong enough to farm, they just dont have their sh*t together and created this vast web of technological and scientific achievements shared among us.
The next species to evolve is going to be our own creation. AI. Dont believe it if you dont want to, but within a few decades, computers personalities will have the capability to be indistinguishable from a real person. Eventually, we will get to the point where we have robots and AI, controlling the production of other robots. Once we have that down, humans wont have to work anymore, because the robots will do all the work for us, and that includes maintainence and creation of their own.
At first sight, it'd appear that they'd be our slaves, but its the opposite. We're going to rely on them, and eventually, even though its hollywood material, they will realize it. Our reliance on them will make us THEIR slaves. We already rely on technology to such a degree that we have already become a slave to it. I hope by that point the people in charge will have been smart enough to put in some sort of fail-safe mechanism to shut those bastards down when the time comes, but you never know.
So, we havent halted evolution, far from it, we control it, and its up to us to make sure it wont be the end of us. If it is, it might not necessarily be a bad thing.