There is an issue tracking this with a bunch of links to discussions about it, but they continue to not have time it seems. https://github.com/facebook/zstd/is

There is an issue tracking this with a bunch of links to discussions about it, but they continue to not have time it seems. https://github.com/facebook/zstd/issues/3100 https://github.com/facebook/zstd/issues/3100 This was the first place my mind went when I saw this Content-Encoding announcement, so I ran and re-checked the issue :(.