My review's a week late, but hopefully not a dollar short.
Well, there's not a whole lot of capital to spend on this issue, anyway. It's a transition issue. There's not a lot of new revelations, twists, or plot development. As you might imagine from reading the first three issues, it takes a pretty natural course with what was already laid down: Jim Gordon is thrown to the wolves by the authorities, Barbara goes nuts over the betrayal, Stephanie Brown is in a lot of trouble, Forbes demands the police go after Batman, and Batman unsuccessfully tries to intimidate Falcone.