Cute: "Incidentally, this also makes it possible to set up 'cycles' where replication is going in a circle. Whether that's a feature or a bug depends on your perspective."

Is there any context in which it would make sense to set up circular replication? This would necessitate that all of your nodes be read-only, so I'm not sure what there would be to replicate.

In any case, a bunch of these new features are hot. Particularly excited about fast failover and custom background workers.