In this chapter we describe and analyze a case of public innovation in regional planning in Sweden. It connects to the overall framework of public innovations in several ways. First, it illustrates how collaborative planning and policymaking can be designed to produce innovative policy. Second, it provides some empirically based ideas on what kinds of mechanisms make collaborative policymaking durable and innovative. By way of introduction we give a short overview of how ‘regional planning’ in Sweden has been reframed.