Actually looks like it is actually somewhat official at this point, at least according to this site: https://www.oregonmusicnews.com/hardy-fox-rip.
There was a pseudo obituary a couple weeks ago in the SF Chronicle but it mentioned that his status, like his identity, was unknown. At any rate, this news has reignited my love of The Residents. Had gotten out of the habit of listening to them in recent years and I've been loving revisiting the classics and grabbing some key releases I missed the first time around. Still one of my favorite groups after all these years. Their new album is pretty disappointing though- seems unfinished (or at least rushed) due to Hardy's demise.