The notion of digital transformation encompasses the adoption and integration of a variety of new information and communication technologies for the development of more efficient, flexible, agile, and sustainable solutions for industrial systems. Besides technology, this process also involves new organizational forms and leads to new business models. As such, this work addresses the contribution of collaborative networks to such a transformation. An analysis of the collaborative aspects required in the various dimensions of the 4th industrial revolution is conducted based on a literature survey and experiences gained from several research projects. A mapping between the identified collaboration needs and research results that can be adopted from the collaborative networks area is presented. Furthermore, several new research challenges are identified and briefly characterized. Author Contributions: Conceptualization, L.M.C.-M.; methodology, L.M.C.-M. and R.F.; writing-drafting Section 3, R.F. and L.M.C.-M.; writing-drafting Section 4, F.F. and L.M.C.-M.; writing-drafting Sections 5 and 7, L.M.C.-M.; writing-drafting Section 6, J.R. and L.M.C.-M.; writing-inputs for Sections 1 and 8, all authors; writing-reviewing and editing, all authors; funding acquisition, L.M.C.-M.Funding: This work was funded in part by the Portuguese "Fundação para a Ciência e Tecnologia" "Strategic program UID/EEA/00066/2019" (CTS project), by the SOCOLNET society (ARCON-ACM project), and by the project POCI-01-0247-FEDER-033926 (Future Yammi).