This issue of Developing Leaders Quarterly explores 'Ecosystem Leadership'. As the context leaders have to operate within becomes ever more complex and the boundaries of their influence ever fuzzier, the skills and mindsets of leaders needs to adapt and change. In a series of five articles we examine ecosystem leadership through a number of lenses: three world-renowned thought leaders from London Business School and Boston Consulting Group bring their insights on 'Winning the Ecosystem Game'; ecosystem researcher and academic Roland Deiser explores 'The Art of Business Ecosystem Leadership' while three senior Siemens executives, (their head of leadership, Chief Technology and Strategy Officer, and the CEO of Siemens Avanta) share their experiences. We also have Greg Barnarda, formerly of the World Economic Forum, on his ecosystem research and the need for a different kind of mindset, and Professor Willy Donaldson on the centrality of systems-thinking to successful leadership in ecosystems. This issue also covers other topics: the need for leaders to be connectors not constrainers, from Dr Mark McKergow; Leading Below the Surface from diversity consultant and coach LaTonya Wilkins; Why Biology Matters by Emma Russell; Leadership and Empathy by Martin Best and an exploration of how individual transformation is a prerequisite for organizational reinvention. As well as our usual book reviews and research summaries.