Untitled #1 New Series question

Debbie wrote: "Does anyone know the story behind this book?"

I'm baffled! I knew they were finishing his existing series, but a new series? Now? Odd.

EDIT - Found this which sheds a little light - http://www.brianhaig.net/newsletter

John, Thanks for posting the link. I knew Mr. Flynn was working on a book of his own and a collaboration, but hadn't seen anything on either in a while.