The review examines modern library activity taking into account the influence of external technological and social environment, changes in scientific communications, education, modernization of data management systems, etc. The author identifies trends in developing scientific (academic) and public libraries to a greater degree. The material is structured in blocks and presented in two parts (the first one was published in «Bibliosphere», 2018, № 4). This review includes the following sections: 1) user preferences and new library services (information literacy development programs, research data management, web archiving, etc.), 2) libraries as centers of intellectual leisure, communication platforms, places for training, co-working, renting equipment, creativity, work, scientific experiments and recreation, 3) «smart buildings» and «smart libraries», 4) optimism of the future. To prepare the review, an information search was carried on the world's largest databases (Google Scholar, Web of Science, Scopus, etc.), which identified over 500 sources on the topic discussing trends and future development of libraries. All materials were classified according to sections, library types, advanced technologies. The author collects and considers cases of information technology, research and articles related to their introduction for new services creation emphasized those that may affect the library in the future; studies the latest information technologies should be applied to the next generation library. Publications analysis show that academic and public libraries strive to serve readers using modern information technologies, create spatial environments for creativity and intellectual leisure, provide comfortable conditions of servicing, enhance skills of librarians in accordance with changing user preferences. It creates prerequisites for an optimistic vision of the library future not only as repositories of information, but as centers of intellectual leisure, communication platforms, places for learning, co-working, creativity and inspiration.