DC's The Source has a preview up for Batman Comics Annual #27, which is continued in (thank you, kingrockwell) Detective #11.
From the entry: Writer Fabian Nicieza and artist J. Calafiore present a tale of a murdered priest. A desecrated grave marker. A kidnapped child. A secret key. A mystery whose solution could upset the world order. For Batman and Robin to stop the rampage of a zealot named Amon, the Sixth Sinner, they first have to halt a deadlier foe intent on making sure Amon succeeds. To end the killer’s mad scheme, Batman faces Azrael, Death’s Dark Knight.
I'm intrigued. Kind of looks like it might be a fun mystery with some interesting character moments.