According to the TOC, the new issue of the Journal of Electronic Resources in Medical Libraries (vol. 1, no. 4) will have two articles on OA. Not even abstracts are free online, at least so far, but this TOC is merely a preview of a forthcoming issue.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.