Gregg Rosenberg's book A Place for Consciousness: Probing the Deep Structure of the Natural World was published a few months ago by Oxford University Press. Even before publication this book had a sort of cult following among people interested in "radical" approaches to the metaphysics of consciousness. Broadly speaking, Rosenberg defends a Russell-style metaphysics on which consciousness is grounded in the intrinsic categorical properies of certain physical processes, and in particular is closely tied to the intrinsic nature of causation itself. This is by far the most detailed development of a Russell-style metaphysics of consciousness that I know of. He also has a chapter with a novel anti-physicalist argument, a chapter responding to philosophical critics of anti-physicalist arguments, chapters on the "boundaries" of consciousness and on panpsychism, and a lot of material on understanding causation in its own right. I don't agree with everything here (and I'm still trying to understand all the details of the positive theory), but it's well worth reading.
There's already some discussion of the book on the web. Apart from Rosenberg's own website and an Amazon page, Steve Esser's weblog "Guide to Reality" has a summary and an evaluation. The Physics Forum website has threads discussing the book here and here. Much of this discussion is by philosophically-interested nonphilosophers, who are often less conservative than professional philosophers where radical views of consciousness are concerned. But there is a lot of meaty analytic philosophy in Rosenberg's book (like my own book on consciousness, Rosenberg's book is a revised version of his Ph.D. thesis from Indiana University), and I'd encourage interested philosophers to come to grips with it.