Sources: Apple's chip chief Johny Srouji told Tim Cook that he is seriously considering leaving soon; some execs floated elevating him to the CTO role (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg:
Sources: Apple's chip chief Johny Srouji told Tim Cook that he is seriously considering leaving soon; some execs floated elevating him to the CTO role  —  Apple Inc., long the model of stability in Silicon Valley, is suddenly undergoing its biggest personnel shake-up in decades …