Ithaka S+R has released Supporting the Changing Research Practices of Historians .
Here's an excerpt:
In History, the Ithaka S+R project team found a discipline in transition. An expansion in the nature of the field over the past 50 years has introduced new sources, both in terms of subject coverage and international scope. However, only a comparatively small share of the primary sources required by historians has been made available digitally, tempering the opportunity for new methods to take hold.
Even if the impact of computational analysis and other types of new research methods remains limited to a subset of historians, new research practices and communications mechanisms are being adopted widely, bringing with them both opportunities and challenges.