The update was implemented several hours ago I'm pretty sure; all I did was go to the Milihime album, click on one of the girls I have, and then click on their card. Clicking on their normal card showed me the normal CG and clicking on the damaged version showed me the damaged CG. example. Also I tried extracting the images using developer tools; I could view a lot of the other images directly fine, but I kept getting the error "could not load the image" when I tried to view the CG images directly, but if you can get it to work that would be awesome.
you just press F12 while you're playing the game in your browser and then go to network (it'll probably make you reload the page) and it'll show you all the images and whatnot that the game is showing. I worked out that the ech_img_(number).png images are the CG, but like I said I can't actually view them through the developer tools because of the previously mentioned issue. I'm not sure about if the quality would be better or not.