Here's a recent interview with John Hagel and John Seely Brown.

How can their companies develop a sustainable competitive edge that can keep them ahead of the competition?

While traditionally strategic advantage was based on geographic distance or core competencies, which were typically defined as static, increasingly the only sustainable edge has to do with the capacity to accelerate capability building. Companies must be able to build distinctive capabilities more rapidly than anyone else. What we focus on are management techniques that are emerging to help build that kind of dynamic strategic advantage.

It's a set of tools that can facilitate people at the edge being able to perform serious new work, because in this rapidly changing world, you need a constantly evergreen set of capabilities. Your sustainability depends on your ability to develop these capabilities before anybody else.