We know he is working on it because he talks with everyone daily on irc and gives updates. In addition, he always finishes his projects. He has a history of always finishing his projects. Simple as that. He doesn't need to send you copies of what he is doing to prove he is working on it. Devs don't send out copies to random people to peruse and evaluate. He is still working on it. Be patient and you'll like what they release.