Mod support is coming, though you will have to pay for the expansion to use it. These additions are almost expected at this point, but there’s more. Rodriguez says it will be paid DLC just like Afterbirth, but will include new items, enemies, and “rad” bosses. I haven’t even touched The Binding of Isaac: Afterbirth yet (I’m waiting for the PlayStation 4 version since that’s where my save file is), yet Edmund McMillen and Tyrone Rodriguez are already talking up the next expansion, Afterbirth+.