It seems that users who have auto-generated identicons as profile images are showing different images on their profile vs on posts. The images shown on posts and in chat are the regular images that have always been, but on profile pages, and reputation leagues, I am seeing different new images. Also seems that the network profile shows the original image but per-site profiles are showing the new image.
Weirdly, other people don't seem to be seeing this (after asking in chat), but I do even when I'm not logged in and on different network connections. I've only looked at a handful of accounts but all the ones I have checked are showing the same inconsistency.
Some affected profiles:
https://graphicdesign.stackexchange.com/users/18306/joojaa https://graphicdesign.stackexchange.com/users/36888/rafael https://graphicdesign.stackexchange.com/users/306/da01 https://graphicdesign.stackexchange.com/users/52410/peter-green https://graphicdesign.stackexchange.com/users/3327/user568458