Docs updated https://grafana.com/docs/grafana/latest/guides/whats-new-in-v6-7/. 
Once again, thanks for pointing this out. Regarding your question - Grafana 7.0.0 stable version has been released yesterday. 
You can learn more here or at Grafana blog. And regarding releases, past year, we have done 1 major release and around 8 minor releases.
