http://www.nydailynews.com/news/worl..._semenya_.html
In one sense, it would seem quite unfair to strip Caster of the medal won, as anything unique about Caster is not Caster's intentional doing.
I note Caster is being advised to seek surgery to eliminate the internal testes. OTOH, I wonder if the genetic condition has enabled Caster competitively.