JISC has released Digital Repositories Roadmap Review: Towards a Vision for Research and Learning in 2013.
Here's an excerpt from the announcement:
The review is structured into two parts. Firstly it makes a number of recommendations targeted at the JISC Executive. The review then goes on to identify a number of milestones of relevance to the wider community that might act as a measure of progress towards the wider vision of enhanced scholarly communication. Achievement of these milestones would be assisted by JISC through its community work and funding programmes. The review addresses repositories for research outputs, research data and learning materials in separate sections.
…and the report is available in a proprietary format. FAIL!