does anyone know how long he's been working on it?, and how it's going?
He started working on it probably a month or so before he announced the demise of CG and that he was working on a new game. Technically he started working on this when he started working on CG, since he reused a lot of the engine pieces from CG and started getting ideas for this new game. Someone can look up the date of that announcement about CG development stopping to guesstimate a real timeline for all of this
Also, I suspect the link-dead forums will be ready in the near future, so that all of this talk happening in the Lounge can go there instead.