The Budapest Open Access Initiative has issued recommendations for the next ten years of open access development.
Here's an excerpt:
Ten years ago the Budapest Open Access Initiative launched a worldwide campaign for open access (OA) to all new peer-reviewed research. It didn't invent the idea of OA. On the contrary, it deliberately drew together existing projects to explore how they might "work together to achieve broader, deeper, and faster success." But the BOAI was the first initiative to use the term "open access" for this purpose, the first to articulate a public definition, the first to propose complementary strategies for realizing OA, the first to generalize the call for OA to all disciplines and countries, and the first to be accompanied by significant funding. . . .
The problems that previously held up the adoption and implementation of OA are solved, and the solutions are spreading. But until OA spreads further, the problems for which OA is a solution will remain largely unsolved. In this statement, we reaffirm the ends and means of the original BOAI, and recommit ourselves to make progress. But in addition, we specifically set the new goal that within the next ten years, OA will become the default method for distributing new peer-reviewed research in every field and country.