This chart comes from Timothy Taylor's post The Shifting World Distribution of Income. One notable thing I saw was that median annual income (measured in purchasing power parity dollars) doubled from 2003 to 2013. This chart suggests it will double again within about 20 years. Of course, the most obvious change is the collapse of the spike in at the low end of chart, indicating the rapid decline in the number of people living in or near extreme poverty. See Taylor's post for more details.