Short answer is: The 2.0 release won't natively support automated failover, although you can build around using PG tools like physical replication + Patroni. But these capabilities are certainly things we are working on.

Per the PR notes:

  The current implementation has many more limitations 
  that will be addressed over time:

  - HA and replication has to be managed node-by-node. 
    This will be improved with native replication.

You can utilise multinode data replication for high availability of data, however it is still necessary to use an external tool for HA of the access node, which distributes data and queries to data nodes.