No idea, I’m afraid. There was a thread up about it a couple of years ago.
In general really, if a WIP thread has closed my comment above stands:
There is the “what WIP would you like to bring back from the dead” thread which sometimes has more info. But sometimes it happens that there just isn’t anything visible about these things - just part of the nature of creating public WIPs.
Going to close this thread here as there isn’t much more to be said, and point those interested to the “back from the dead” and Hey, what’s that game threads 