Postgenderism: Beyond the Gender Binary

That's the title of a new essay from George Dvorsky and James Hughes available at Dvorsky's blog SentientDevelopments. Dvorsky is a prominent transhumanist and co-founder of the Toronto chapter of the World Transhumanist Association. Dvorsky coined the term "postgenderism" and wrote the original wikipedia entry, which has now been merged with "transgenderism".

From the abstract:
Postgenderists argue that gender is an arbitrary and unnecessary limitation on human potential, and foresee the elimination of involuntary biological and psychological gendering in the human species through the application of neurotechnology, biotechnology and reproductive technologies. Postgenderists contend that dyadic gender roles and sexual dimorphisms are generally to the detriment of individuals and society. Assisted reproduction will make it possible for individuals of any sex to reproduce in any combinations they choose, with or without “mothers” and “fathers,” and artificial wombs will make biological wombs unnecessary for reproduction.
The Transhumanist movement is very well organized and dedicated to putting transhumanist principles into practice. There are over fifty chapters around the world, and many affiliates, such as the Immortality Institute, Better Humans, and the Mormon Transhumanist Association, which is notable for being the only religious affiliate or chapter, the others being expressly atheistic.