I just mailed the October issue of the SPARC Open Access Newsletter. This issue takes a close look at ten challenges facing OA journals. The roundup section briefly notes 177 OA developments from September.
Update. Correction: I tried and failed to mail the October issue. I'm having trouble with my ISP and can't send any email at all. I'm sure it's temporary, and my ISP simply found the perfect time to let the gremlins out. In the meantime you can read the online edition of the newsletter, which is identical to the email edition.
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.