Last summer (2017) The IDW and DC teamed up to put together a The Teenage Mutant Ninja Turtles and Batman comic. Should says that is when the trade paperback was out. Well they are at it again. Just seen on Amazon.ca the the second volume, Batman/Teenage Mutant Ninja Turtles II, will be out August 14, 2018. Right now they are only listing a hardcover. But pretty sure there will be a paperback as well. Will be getting a copy of sure.