Apple has expanded John Ternus's responsibilities, making him oversee the company's design teams in addition to his role as hardware chief. This move positions Ternus as a top candidate to succeed Tim Cook as CEO. Cook, who has been at the helm since 2011, turned 65 in November 2025. His decision to give Ternus more authority signals a strategic shift within the company as it prepares for leadership transitions. Ternus's new role includes managing one of Apple's most crucial functions: design. This responsibility is significant because design plays a key role in Apple's product identity and market success. The change suggests that Cook is grooming Ternus not just for hardware leadership but also for a comprehensive understanding of Apple’s operations, which is essential for any future CEO. Sources indicate that this decision was made quietly at the end of 2025, reflecting an internal acknowledgment of the need for a successor as Cook prepares for retirement. Ternus's ascent highlights a broader trend within Apple to reinforce leadership from within, especially as the company navigates a highly competitive tech landscape.