The Universidad Nacional Autónoma de México's humanities school (Facultad de Filosofía y Letras) has launched a new IR, RU-FFYL, as part of UNAM's 3R project. See the January 31 announcement by Juan Manuel Zurita Sánchez in the original Spanish or Google's English.
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.