Further to IanM - I believe the queue rework is now complete, and is deployed here on discuss also for testing and monitoring.
During extended testing of rc.5 on a large scale enterprise community, it was discovered that queue routing (placing certain jobs on certain queues) was broken since the Laravel upgrades earlier in the year. This resulted in an overhaul to how Flarum manages and registers queues.
As a result, both fof/redis and fof/horizon needed refactoring, as well as flarum/core itself. As such, anyone installing the 2.x-dev of core, should also pull in fof/redis / fof/horizon at 2.x-dev respectively, if you're using any redis based queue. Any 3rd party alternative queue implementations (RabbitMQ, for example) will also need heavily updating as well.
The refactor has also given us the opportunity to implement queue pause and resume, both of which were previously only no-op stubs to satisfy the Laravel contracts.
Documentation is updated now, applies to 2.x-dev as it stands today, and 2.0.0-rc.6 when it is released.
