Article from Research Information discusses how institutional repositories are evolving to include a wide variety of digital scholarship and examines how this evolution is impacting university presses. Nice examples from Pacific University and New Prairie Press and a lengthy explanation from bepress' Irene Kamotsky about how the IR can both help spark university press initiatives and work in complement with existing ones.
Pool, Rebecca, "Repository Revolution" (2015). Publishing Journals using Digital Commons. Paper 39.