Is Rancher 2.7 not yet considered stable? Blog post says it’s GA https://www.suse.com/c/rancher_blog/whats-new-in-rancher-2-7/ but no mention of it in the repo

README

yet https://github.com/rancher/rancher even though a release for 2.7.0 is available

It is, the readme needs updating. I'll raise this internally - thanks for highlighting this.