I just had a discussion with Mr. DeSanto himself and he said that the Emerald City Comic Con thing is false. (as is the TV Tropes page.)
He says there are some problems that are holding up any future projects due to Ishimori Pro being ignorant of the fact that 009 is not as popular outside of Japan and cultural differences between them and Archaia.
But he also said the book was nominated for several awards and is currently in the process of being printed into other languages for international sales. So we have a Schrodinger's cat scenario basically. A project that is both dead and alive.
I know its not cancelled outright, but the fate of the novel series should be labeled as unknown at this time.