This document discusses four scenarios for the future of cities and society driven by new digital technologies and sharing platforms: 1) "The City: Your Stage" where platforms enable social business and on-demand services, disrupting traditional economies. 2) "Metropolis Reversed" where establishments fight innovations trying to maintain order. 3) "Networked Serendipity" focuses on sharing, collaboration and value creation through connected people and platforms. 4) "Minority Report" examines issues around unlimited data, AI and loss of privacy with increased surveillance. Throughout, themes of sharing resources and services through new platforms and connections are explored, along with economic and societal disruptions that may result.