The Wikimedia Foundation is now conducting a vote of users on whether to re-license its content under the CC BY-SA license. Voting is open to logged-in users with at least 25 prior edits on a Wikimedia project.
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.
