Hi Scott,
Right now we do not have a full list, but features that are currently covered are those that are demonstrated on the MVC Dancing Goat demo site (github). Basically, we do support access to content pages, including attachments, preview, partially newsletter subscription and online forms, workflow, webfarms, windows azure (things that we had mentioned in the MVC webinar). Roadmap is currently simple - version 10 will bring Ecommerce and Online marketing features and in version 9, we may push some little tweaks such as scaffolding support. We are also looking into a few other areas we can improve, as well.