I agree - why release the story, let him be a girl and live as a girl, which he is comfortable with (given the history) and then if he changes before or on puberty, so it. If he doesn't then take him into the hormone programme and eventually reassignment at an early age.
He is so lucky to be able to live in the gender he craves, most do not. He is unlucky that this story has been leaked to the press by his parents, relatives, family friends or even the school.....the person that did should be ashamed. However, once it has been released, so be it, be honest and proud of her.