As dark chocolate has seen increased demand and favour worldwide because of its purported health benefits, in September 2006 the four-finger Kit Kat Fine Dark was launched in the United Kingdom as a permanent product, and packaging for the entire brand was changed.
由于黑巧克力据称对健康有益，因此在世界各地的需求和偏好都有所增加，2006年9月，英国推出了四指巧克力 Kit Kat Fine Dark，作为永久产品，整个品牌的包装也发生了变化。