Realized that I haven't checked back here in a while. If anyone's still interested in Core, it's now named Coggoid and I've got a dev blog going for it at http://www.coggoid.com/devblog

At this point I'm mostly just looking for developers to help test the engine. It's not in a perfect state, but should be workable enough for people to start making projects very soon. If you're interested let me know on the blog!