Describe release cadence, version numbering, etc

[sftim]

This is a Feature Request

What would you like to be added
A page that tells readers about the following, or helps them find other authoritative pages about:

• Which versions of Kubernetes are supported, and what “supported” means
• How often major versions are released
• How often minor versions are released
• What versions are compatible with what other versions
  
• What the Kubernetes project does about releases to address security shortcomings, etc

Why is this needed
Someone asked about this on Slack, and when I was looking for a page to answer their question I realized that there wasn't one.

[sftim]

Potentially relevant to #12322, #12323, #12324, #12233, and #14307

[sftim]

/kind feature
/priority backlog

[sftim]

/remove-priority backlog
/priority important-longterm

[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[sftim]

/lifecycle frozen

[sftim]

/sig release

[sftim]

We now have https://kubernetes.io/releases/ from PR #27929
/close

[k8s-ci-robot]

@sftim: Closing this issue.

In response to this:

We now have https://kubernetes.io/releases/ from PR #27929
/close

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