We must enter into a new era of leadership. By 2020, Millennials (those born between about 1980 and 2000) could be half of the US workforce, and by 2025, 75 percent of the global workforce. This is a generation that has completely grown up on digital. That kind of mindset is very different from the command and control of years gone by. And as industry changes and moves into version 4.0, leadership has to make a similar transition. But first, we need to see the era of Industry 4.0 that is creating the need for Leadership 4.0.