A patreon post on March 27 said that he had finished Foxy's AI and could release a free demo.
But after 3 months, I haven't seen that demo either on here or patreon, so I wouldn't hold my breath waiting for it.
I will say that, I'm not that interested in this game, but if you're interested in supporting the game's development and the creator, you should consider subbing to his patreon.
It's just 1€ per month.