The NHPRC and the Andrew W. Mellon Foundation have issued a call for proposals for Digital Edition Publishing Cooperatives.
Here's an excerpt:
The National Historical Publications and Records Commission (NHPRC) and the Andrew W. Mellon Foundation invite proposals for Digital Edition Publishing Cooperatives. Working together, the Cooperatives will develop technical and human infrastructures to support the digital publication of documentary and scholarly editions and to provide for their long-term preservation, discovery, and use. This initiative responds to the urgent need of scholars and documentary editors for reliable, sustainable, authoritative, and field-driven outlets for publication and discovery of digital editions. At the same time, we hope to investigate the possibility of creating a federated system or systems for publishing and sustaining digital editions.