An extensive profile of John Ternus by Bloomberg indicates that he is the current heir apparent for Apple CEO Tim Cook, despite there being no immediate plans for a transition. This follows conflicting reports about when Cook might step down and who might replace him. Despite these reports, Cook himself seems to intend to stay on as CEO for a period of time. Additionally, he has taken a larger role in Apple’s product marketing and its work to make its devices more environmentally sustainable. The profile also indicates that Ternusky's empire has grown, taking control of a secretive unit developing robots and overseeing Apple”s hardware and software design teams.