Indeed, as far as I know, it remains a tantalizing relic with no public availability.
That said, I'm not privy to the inner secrets of the Chaosforge stable, though I can surmise there are surely one or more secret projects about. On the other hand, there might well be merit to coming up with a Bounty for restarting the project on the bounty board as a way of forcing the issue to gauge interest in a more direct way---the next version of DoomRL shall benefit tremendously from that last funding drive when his dev machine and such died awhile back.
Time, or somebody badgering him with cash, will tell---outside of the above CastlevaniaRL which while well developed has gone defunct, he's be literally the only one attacking at this genre in the Roguelike context.