Product Management 101 tells you it is all about managing the market oriented product life cycle. (A typical Product Management 101 slide deck can be found here )
Among all the qualities that separate a great product manager from a good one, the ability to overcome the perspective gap is at the top.
Googling “Post Agile” brings up the following as “Searches Related to Post Agile”
Design Thinking is a collaborative process where those who innovate meet a user demand with what is technically feasible, using a viable business strategy. It′s a human−centered approach to problem solving that helps people and organizations become more innovative and more creative. (Explore Creative Confidence by Tom & David Kelley)
A good article on combining Agile and Design Thinking comes from Tom Roach, Design Lead at IBM. Check it out: How to combine Design Thinking and Agile in practice