Profile of John Ternus, likely Tim Cook successor, who shapes Apple's hardware portfolio, is expanding his domain within Apple, and his visibility to the public (Mark Gurman/Bloomberg)

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Mark Gurman / Bloomberg:Profile of John Ternus, likely Tim Cook successor, who shapes Apple's hardware portfolio, is expanding his domain within Apple, and his visibility to the public  —  Current and former employees and executives who've worked closely with Ternus, most of whom requested anonymity to discuss …