Terra Zero has just interviewed Eduardo Risso at VIII FIQ (Festival Internacional de Quadrinhos) and he stated that both he and Paul Dini are working on a new Vertigo series.

And it will star a character from the Batman comics.

Let's let Google Translate fill you in. Or at least, scratch your head quizzically.

Eduardo Risso and Paul Dini will be together in a series of Vertigo with a character from the Batman universe. Risso did not reveal who the character, but proved quite interested in working with Dini and the universe of Batman once more. Interestingly he revealed that a few minutes after this writer had asked if he toparia with the entire team of 100 Bullets, making an issue of Wonder Woman. But superheroes are not really his thing.