A Delphi study was performed to identify trends about innovative services in Colombian public libraries. An expert panel participated in three rounds with on-line questionnaires. Four trends were found: stronger community relationships; coexistence of books, technology and users; spaces for creativity, communication, collaborative work and networking. The study concluded that innovation at a public library is the capability to adapt services within its context and constantly engage in the necessary reflection and action about the methods, results and impact of its services.