The new themed peripheral for the Wii U is developed by a third-party manufacturer and not Nintendo. The device will be for sale at a price of $50, which is $30 less than the estimated price for the official Wii U Pro Controller.
Australian games retailer EB Games has listed the new controller on their site and they will be stocking it come the release date of Nintendo’s console.
You might want to wait for reviews before pre-ordering the controller. Since it’s not developed by Nintendo, there’s no say in it’s quality.