The gist of the regulations is quite simple. Toys must not reinforce gender stereotypes and must be suitable for both genders. Whilst the regulations are simple, demonstrating your product complies with them is not so simple. Apparently it is not sufficient to state that any child can play with a particular toy, the manufacturer must clearly demonstrate this to be the case.
Airfix appear to be on the ball here, repackaging not only their iconic Spitfire model (made by every boy and presumably now girl) with a all pink paint scheme, but have announced that they will be releasing a new range of pink tanks starting with the classic T34.
Hasbro have demonstrated this is not just a one way street with a militarised line of My Little Pony models hitting the shops soon, starting with the My Little Pony: Vietnam line.