Apple today announced that COO Jeff Williams will retire later this year, with Sabih Khan set to assume the COO role later this month. In addition to his role as COO, however, Williams is also responsible for overseeing Apple’s design team. Once Williams officially retires later this year, Apple says that the design team will begin reporting directly to Apple CEO Tim Cook. From Apple’s press release today: Apple today announced Jeff Williams will transition his role as chief operating officer la...