Still, judging from how the last two levels are going to have less content than the first three, I wouldn't get my hopes too high. This is a pity a bit, as there are areas in this Prison that are begging for implementation of some raunchy, juicy bits: infirmary, gym, classroom, workshop, laundry...
I guess the thing is that KP is quite an ambitious attempt at a lewd game which is trying to be as debauched as possible while still being a well-thought-out game. It is a corruption game at its core but not as simple as the majority of games in this genre, whereby depravity is a result of failing to fulfill an otherwise noble quest in chaste fashion and the sex scenes are either defeat rapes or questionable side jobs taken up in order to gather funds for upgraded adventuring equipment. It is much more complex than here, just compare it with Meltys' Quest. So I think that putting out new content is not as simple as adding an extra scene here and there. Not when you have such a complicated system of passives, edicts, stats, unlockable skills, etc. that have to provide a balanced yet challenging gaming experience.