1.27 hasn't been released yet.

Looking back at the previous release, 1.26, for comparison, we have this post, published a few weeks before 1.26 was released:

    https://kubernetes.io/blog/2022/11/18/upcoming-changes-in-kubernetes-1-26/

The release announcement, made on the day of the 1.26 release, highlighted the new stuff:

    https://kubernetes.io/blog/2022/12/09/kubernetes-v1-26-release/