I doubt his 15 minutes are up yet. Book deals for someone like him are only given if he has something that would make it sell.
I like Celebitchy's take on it. Levi's clearly just keeping his name enough in the news so that people will know who he is when his book comes out. Smart media strategy by his lawyer.Sarah likely had a lot of stuff going on that led her to quit, and the problems with the Johnstons were just one issue among many. Whether this will affect her presumed ambitions at a national political career remains to be seen. This book sounds interesting though and I know I would enjoy reading Levis take on the situation. By many accounts he was almost shut out of his sons life by Sarah and he must be anxious to spill the details for the right price.
Also, video of Levi's press conference: