In several prominent places there need to be clear links to "Get OpenACS." For each major version there needs to be a clear map to get the tarball(s), the RPM(s), a summary of which modules exist and where to get each of them, a summary of which modules are "in the works" and how close they might be to release, a link to installation docs, and probably a couple of other obvious things I'm forgetting.
All these things are probably completely obvious if you already know where they are ...