Quality Digest has a good discussion on how Lean Six Sigma spurs innovation and drives product development.
The company that is a testimony to this is Xerox. It uses Lean Six Sigma to develop its Xerox iGen4. Specifically it uses Design for Lean Six Sigma (DFLSS) in gathering the voice of the customer (VOC).
Six Sigma : Your Resource for Strategic Management. Meikah Delid. Eversun Software 2006.