The Society for Scholarly Publishing has published a profile of John Sack, Director of the HighWire Press.
Here's an excerpt:
[Sack:] Some of the next "wave" of innovation in scholarly publishing will come from the rate at which other sorts of non-journal content (such as books) is going online. . . . Standards—or perhaps “best practices”—will emerge for finding, linking, and integrating book content with journal content (and we may even see the functional distinction between books and journals being to merge), integrating audio and video, integrating new mobile devices (Kindle, iPhone), etc.
An earlier profile of Amy Brand, Program Manager of the Harvard Office of Scholarly Communication, may also be of interest.
