Well "surprise", been teasing this on twitter but it took me 4 days to get everything done, as for the changes, well, this will be a bouncy update, Izumi now has butt and thigh giggle, aside from that there are small changes to her Idol and classic panties since they had 2 bones to control the bottom of her panties and now she only has one, moved her lips up a little in her smiling morphs and added a little detail to her back, her boob bones are now "move" - "translation" bones too, the trade off for the new physics is that the are 2 new bones for her panties that follow the physics bones for her panties, so in order to remove her panties before you had to parent the "leg panties" bones to the "panties" bone to stop her leg from deforming her panties, now you have to do that and parent the "pnts physics" bones to the "panties" bone too, but those two new bones can also be used for lewd purposes like peeking under Izumis panties and stuff, give it a try and let me know if there are any bugs.
**Sorry guys after a bit more of testing, I had to tone down the jiggle on the thighs a bit, they were out of control, weight painting had a small change too, here is the new link
http://www.mediafire.com/file/lgu0ucb3nuzqhqr/Izumi_Shimizu_2.0.17.rar