The goal is to keep producing new stuff for older characters - scenes, outfits, dialogue, etc. Not to throw any shade on other games, but there's a tendency with games like this to lavish new characters with all the love and attention, while the older characters get forgotten and ignored, and when another new character appears, the cycle repeats itself again and again. The first few updates in every chapter will more than likely be for the new characters, establishing them, adding things for them, etc. but after that, we'll start integrating the older characters with them, then add new scenes for everyone and so on.
As I've said in the past, we've gotten to this point and, if you've been paying attention, there's a lot of plot threads that we've only just started laying down, and if you're familiar with the comics, you know things are about to get pretty damn Dark, pretty damn quick. We're not about to ditch everyone's favourites just because the new hotness is in town.