WebP2 also got "demoted" (https://chromium.googlesource.com/codecs/libwebp2/+/1251ca74...):

    -WebP 2 is the successor of the WebP image format, currently in development. It
    -is not ready for general use, and the format is not finalized so changes to the
    -library can break compatibility with images encoded with previous versions. \
    -USE AT YOU OWN RISK!
    +WebP 2 is an experimental image codec based on WebP. WebP 2 will not be released
    +as an image format but is used as a playground for image compression
    +experiments.

If anything it would be AVIF nowadays, which is a format that all big browser vendors stand behind, including Apple and Google