The last version I have comes from 2008. I'm not actually sure Steve did any work past that period on it, though I vaguely remember him saying he was doing some a few years ago. I'm not sure the legality of offering up the stuff I have though I have trouble seeing Steve objecting to keeping it available to those interested; I know he was making some small amount of money on subscriptions to his updates at one time, but like I said, I think that's been many years ago at this point, and may have been to keep his powder dry if he ever got it to the point he wanted to publish it proper.