Mr_Rose, it's this:
http://www.forwardkommander.com/
There is a major difference here though - it only supports Privateer Press game systems, and they have given the OK for this sort of thing.
GW on the other hand clamp down hard on what they perceive to be IP violations, so if FK did end up producing GW game files they'd quickly find themselves at the receiving end of a C&D letter if they had updates out on the day the codex was released.