The DELOS network of excellence is a European initiative that has been funded by the European Commission under its fifth and sixth framework programs. It has played a significant role in the formation of an active digital libraries research community, the formulation of a vision for the future of the field, and in fostering collaborative research in the direction of this vision. In this paper, we take into account the recommendations of several activities that were initiated by DELOS and outline the DELOS vision for digital libraries. Furthermore, we discuss the current research agenda of the network and the main directions of technical work that it follows.