Is this like a remake or Air Baron, or something new?
I talked to Zev about it at BGG con last year and he said it is something new that incorporates concepts from Air Baron.
I love airline games (at least conceptually) and it sounded pretty good overall.
As for when? Zev didn't have a solid time frame.
My guess was that it was less of a sure thing than other stuff already in the pipeline. Once the pipline cleared up, it would be printed.