The University of Michigan Press has launched Maize Books, which will offer an open access publishing option.
Here's an excerpt from the announcement:
The University of Michigan Press, a unit of Michigan Publishing, is committed to producing and disseminating high-quality scholarship. As part of that commitment, we're proud to announce Maize Books, a new Michigan Publishing imprint. This imprint represents a lean, responsive model for publishing scholarly and creative works. We understand that scholarship can take many forms, and that traditional academic publishers arena't always interested in items that don't fit the typical categories of a "monograph" or a "journal article." . . .
The University of Michigan Press has the tools and the expertise to help you distribute your scholarship, regardless of its form, and we offer methods to make your work discoverable, accessible, and preservable for the long term. In keeping with our mission to explore new forms of scholarly publishing, Maize Books titles will be evaluated by the acquiring editors and Editorial Director of the University of Michigan Press. They will undergo peer review when desirable, including experimental forms of peer review designed to suit the requirements of individual publications.