There was a presentation of Kyber at the 2021 CCC congress: https://media.ccc.de/v/rc3-2021-cwtv-230-kyber-and-post-quantum
Article has links, which provide further links to implementations. All have C code, some also have Java and/or Go.
I couldn’t find anything on the libsodium web site about plans for these. I’d love to have the ability to use Kyber in the asymmetric APIs.
Lemmy thread: https://lemmy.ml/post/351987
Discussion at W3C Credentials Community Group: https://lists.w3.org/Archives/Public/public-credentials/2022Jul/0010.html