California Governor Jerry Brown signed the act into law yesterday.
The law makes research receiving funding by the California Department of Public Health available to the public for free within one year after publication in a peer-reviewed journal.
You can read the new law, see changes made to the bill, etc. on this page.
Timothy Vollmer at Creative Commons Writes:
AB 609 is described as the first state-level law requiring free access to publicly funded research. It is similar to the federal National Institutes of Health Public Access Policy.
The law applies to grantees who receive research funds from the Department of Public Health, and those grantees are responsible for ensuring that any publishing or copyright agreements concerning manuscripts submitted to journals fully comply with AB 609. For an article accepted for publication in a peer-reviewed journal, the grantee must ensure that an electronic version of the peer-reviewed manuscript is available to the department and on an appropriate publicly accessible database approved by the department within 12 months of publication in the journal.