Update incorrect/outdated statement about when test networks start
In https://opentezos.com/tezos-basics/governance-on-chain/#phase-2-exploration-vote-period it says
The community can focus the discussions and tests on this specific proposal. Dedicated test networks are created.
This is not true, or at least not lately. Protocol test networks are usually spawned shortly after protocol proposal publication (once there is a version of shell software, or a release candidate, which can support the protocol)