```release-note:breaking-change
raft: The default raft protocol version is now 3 so you must follow the [Upgrading to Raft Protocol 3](https://www.nomadproject.io/docs/upgrade#upgrading-to-raft-protocol-3) guide when upgrading an existing cluster to Nomad 1.3.0. Downgrading the raft protocol version is not supported.
```

```release-note:improvement
raft: The default raft protocol version is now 3.
```

```release-note:deprecation
Raft protocol version 2 is deprecated and will be removed in Nomad 1.4.0.
```
