I don't think humans will evolve again. In fact, science, medicine, physics ect can be never perfected but the human is able to enlarge his knowledge about the science and everything, which has to do with it. I think the only thing the evolution gives us, will be a bigger brain and less muscles and less hair. The easier the technology, the more useless muscles will be because work gets easier and we mostly see untrained and procreative humans on earth, which might be a dominant fact in future (hopes not so).
Since we know what our ancestors looked like (Australopitecus, Homo Agaster, Homo Habilis ect), we can guess that we won't have so much hair on our body as today. Sure, it will take hundred, thousand of years till the human is totally naked like a baby butt, but I think that hair, which is actually horn that grows on our skin to save us from sun and extreme atmospheric conditions, already belongs to the rudimental "organs" on the human body.
I don't want to assure it now, but it's that, what may come in future. It will take ages, but think about the body of the human. We have 12 rudimental organs already, why should we keep hair then?
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