In the 1960's, sociologists and others who study society predicted that we were entering the Age of Leisure. In fact, studies during the subsequent decades found that Americans were working harder than ever, had less "free" time, and people in the growing "working class" often had to find supplemental jobs.
After the first decade of the twenty-first century, it seems that we really don't have enough jobs for all of our people. Corporations that are situated in Silicon Valley annually lobby Congress to increase the H1-B1 visas so that they can recruit more software engineers, computer technicians, and scientists from places like India.
As China gradually adopts cybernated processes, the piecework and assembly that its workers do will dry up. Manufacturing methods will be done by machine, so the idea of outsourcing to sub-Saharan countries will no longer be economically wise.
A combinaton of superconductivity and nanotechnology will make transportation so fast and efficient that even travel will not consume much time or effort.
So, I think that the next revolution will truly be the engineering of the Age of Leisure. However, it will not be the idyllic sort of life that past visionaries hoped for. I think that armies of intellectuals will be employed to figure out what the rest of us will do. As another respondent mentioned, this will likely involve some form of socialism because most people will not have paying jobs.
In other times, such cataclysmic change would probably have forced some sort of biological evolution. However, human beings have arrived at the point where we can pretty well control the biological mechanisms that once functioned for this purpose. I don't think that we'll allow our "selves" to change very much (exceptions: less hair, no little toe, no ear lobes, no appendix, etc.), but we'll have to find some way to occupy our "inquisitive minds" and obesity-prone bodies.
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