Tim Cook’s departure is the start of a new era at Apple

Apple is about to become a very different company. This September, Apple CEO Tim Cook is stepping down and will be replaced by John Ternus, the current head of hardware. But the shift is bigger than just a CEO transition - it's the most significant move yet into a world where Apple's executive team isn't handpicked by Steve Jobs.

With the departure of Cook, who became CEO in 2011, the list of leaders who were in Jobs' inner circle is dwindling. There's still Apple's senior vice president of services...