The approaching information age will encompass a different societal system in the 21st century due to the impact of the information revolution resulting from developments in computer and communications technology. In light of these changes, libraries need to evolve with the new technology by preparing now to become part of the electronic revolution. Librarians must become familiar with all aspects of the communication cycle and its relationship with the organizations and communities to be served; they need to educate themselves about future scenarios relating to employment, education, energy, leisure, communications, etc., and the impact of changes on the role of the library; and they need to know the changing human needs of the information society, and how these needs will effect changes in characteristics of the library system. In the future, emphasis on a customized approach to designing information delivery systems will be the norm. Finally, librarians may assume numerous roles, including: initiator of the transformation of the library system; promoter of the library system; personal guides, information consultants, and information synthesizers of the electronic services and sources; interpreters of information; facilitators or linkers of information networks; freelance specialists; and group practitioners. Libraries should act as centers where users can receive instruction in the uses of new communications technology, assistance in exploiting various databases, and important communication information services. (THC)