I know this is an old thread.. but going to reply anyway..
The whole next step in human evolution and the telepathy thing actually reminds me of a tv show from the UK in the 70's called the Tomorrow People. The concept being that select kids from that time were the next step of human evolution, ie Homo-Superior. They all had telepathy and an innate ability to teleport (referred to as jaunting) over short distances.
In the end the Indigo Children and the Tomorrow People are the same.. science fiction.