https://bugzilla.redhat.com/show_bug.cgi?id=1714432
--- Comment #4 from Mark Goodwin mgoodwin@redhat.com --- (In reply to Elliott Sales de Andrade from comment #3)
Yes, but the v3.0.0-rc1 tag is the same as the HEAD of the v3 branch, so it'd be the same code, just with a proper version.
grafana has vendored HEAD of the master branch, which is different (newer) to HEAD of the v3 branch. That leads me to think final tagged v3.0.0 (when it happens) will be same (or close) to current master, and hence why grafana went with that rather than current v3.
Regards