Looks like Dark Knight is a possible cancellation with the announcement that Finch will be the artist on the new Justice League of America series. Batman and Detective Comics will sell decent no matter who's on the book,but the spin-off books like Batman & Robin and Dark Knight won't. Look to past titles like Shadow of the Bat,Gotham Knights and to a lesser extent,Legends of the Dark Knight(it had a healthy run but the last 3-4 years of that book didn't sell very well as I recall which led to it getting axed) for examples of how spin-off books featuring Batman don't always guarantee sales. Scott Snyder's run on Detective Comics really brought readers to that title,so the lateral move to "Batman" with the relaunch was natural and the book sells better now than it did before the relaunch last year.
