The document summarizes the key changes made in the Urban and Regional Development Plans Formulation & Implementation (URDPFI) guidelines. The URDPFI guidelines were formed in two volumes and introduced in 2014 to replace the Urban Development Plans Formulation & Implementation (UDPFI) guidelines from 1996. The new guidelines accommodate wide changes in urban development systems over the past two decades related to issues like population growth, globalization, and sustainability. The guidelines cover topics like regional planning approaches, plan formulation processes, resource mobilization, and simplified planning techniques.