Did a quick look through the game files just to see if I could find anything interesting, there's not really anything too interesting for future content aside from the the new moves but we've known about those for a long time. Although the one thing I did find interesting is this sheet of in game skill/item icons. There's not really a lot of changes from the older versions, some new icons have been added to make different events more clear (there's 3 blind effect icons now, one used for mia's blinding effect, and a different set for the lavender fights, same with the sleep icon, a yellow one used by estella and a blue one presumably for cecillia or someone else.) But the most interesting thing is that there's a new unused icon besides the one that's used for the "contaminated by skunk" effect. The icon is literally a skunk with stink coming from it's butt, so it clearly has something to do with the skunk sisters. but It's also kind of an odd icon, just based on the way it's put together, it's background, and it's coloring kind of set it apart from all the other skill/item icons which tend to be a little more simple and have a darker color background, with a single color for the image. It makes me think it's some kind of earlier version of the skunk effect, but if that were the case I think it would have either been placed before the other icon or replaced completely. Maybe it's used for some other UI element which is why it's colored oddly, so maybe there will be some kind of minigame with the skunk sisters, but aside from that I have to believe it's designed for a separate effect for when you get sprayed by the skunks, as you get the other one from just their big gas attacks, so maybe getting sprayed gives you this one as a more intense version.