right now there is one planned DLC that i want to do, ive been making a list of “dream content” for it for the past few weeks since we cut off adding new content to the game currently.
if this dlc happens it might be the only one we do, but ill try to make it substantial and contain a lot o fan designed content, i also hope to have the level editor released in this dlc. but yes this will be a paid dlc like wrath of the lamb if we end up doing it.
as far as free updates, rebirth will be constantly patched for bugs/fixes and tyrone has been known to do small free seasonal updates for the games he does so it wouldnt suprise me if that happens with rebirth as well.