Robert Darnton’s communication circuit model, initially developed to analyze book publishing practices between 1500 and 1800, has long served as a key instrument in numerous historical book and media studies, enabling a comprehensive examination of the interactions among authors, publishers, booksellers, and readers in the historical context. However, with the advent of the digital age – characterized by extensive digitization, evolving online platforms, self-publishing, and social media – the traditional structure of roles and functions in book communication has undergone radical transformation. In the digital space, readers can interact directly with authors, shaping demand for texts even before their official publication, while platforms and algorithms increasingly act as intermediaries, influencing the promotion and availability of the content. This tends to the disintermediation of the classic interaction chain and the emergence of new agents offering a range of services to both authors and readers. The author discusses the main challenges and changes introduced by the digital era into Darnton’s model, highlighting the new roles played by platforms, social media, and algorithms. On this basis, the author examines various approaches to adapting Darnton’s model to new realities, emphasizing its heuristic value for interdisciplinary research and outlining prospects for its further development in the rapidly changing media landscape. It is underscored that, despite the radical restructuring of roles, Darnton’s model retains its methodological significance and remains a vital reference point for the study of contemporary book communication.