A few new independent, Open Access journals have already launched this year on the BioMed Central platform. In addition, there's a title change and journal which has moved to it's third publisher in less than two decades. Geochemical Transactions is in the process of transferring the files originally published with the Royal Society of Chemistry and the American Institute of Physics to its new website. In the meantime, the content is freely available from its original locations.
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.