He's been saying that "cape's still in the closet" mantra for 4 years now. The question was never "does Henry Cavill still want to play Superman?" It was always "does WB still want him to play Superman?" And that has remained the situation since 2017.
Personally, I'm hoping they don't. I've watched every major project he's done since the Tudors, and I'm now absolutely convinced he doesn't have a good Superman performance in him, regardless of director/script. The dude simply lacks the warmth and approachability of Clark Kent. He can't convincingly pull off that lovable blue collar, farm-grown dork. He's too stiff and aloof, even when he's trying to be charming. Which actually makes him a much better fit for Geralt of Rivia, the role he should stick with for the long term, imo.