The older policy, adopted in October 2006, applied only to project leaders and merely requested OA for FWF-funded research. The new policy applies to all employees in FWF-funded research projects and requires OA. FWF will grant exemptions only when compliance would be unlawful --which may be whenever the publisher does not allow OA archiving.
Like other funder policies, this one is strictly about green OA. But FWF also supports gold OA, or OA journals. It encourages grantees to publish in OA journals and allows them to use grant funds to pay publication fees at fee-based OA journals.
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.