It's funny because there's absolutely no censorship going on. Amantes Amentes, the version we have in the west, was like Realta Nua. It added a few side stories and scenes and removed or replaced the sex. That said, it also censored the violence in some scenes. However, the western release present right now on steam has said violence uncensored.
The patch wouldn't be an "uncensor" patch. It would be a patch to add H scenes that were never there in the version we got in the west. Thus why it's taking longer.