The Journal of Electronic Publishing has a comprehensive article by Peter Suber about the status of Open Access in 2008:

A staggering amount of energy was poured into implementing open access (OA) in 2008. This is an attempt to show its depth and breadth, while admitting that the full story can’t be captured in one article. There’s a lot of detail here, but it’s selective and I’ve tried to present just the highlights of 2008 in nine categories, with a 10th section for highlights of the highlights. To keep it within bounds, I’ve omitted some sections I’ve formerly included, such as open education, open access for public-sector information, and the universe of wikis. As always, apologies to the many projects I couldn’t include. [more…]