> The recently released PNG 3 also supports HDR and animations: https://www.w3.org/TR/png-3/

APNG isn't recent so much as the specs were merged together. APNG will be 21 years old in a few weeks.

True, but https://news.ycombinator.com/item?id=44802079 presumably holds the opinion that APNG != PNG, so I mentioned PNG 3 to counteract that. Animated PNGs being officially PNG is recent.