Looking forward to 1.0 on June 1st (hopefully). However, why do I get a feeling that there's going to be one last possible fight against Lust. For those who haven't played this game yet and don't want spoilers: stop reading now and don't click "view rest".
I'm guessing since Mida mind conquered Lust in her own domain, she became the new Lust. I've only done high corruption playthroughs, so I could be wrong.