Here is a recent (today) blog post from the Safari team, spelling out JXL support: https://www.webkit.org/blog/14205/news-from-wwdc23-webkit-features-in-safari

Here is a recent (today) blog post from the Safari team, spelling out JXL support: https://www.webkit.org/blog/14205/news-from-wwdc23-webkit-features-in-safari-17-beta/ https://www.webkit.org/blog/14205/news-from-wwdc23-webkit-fe...