- JACK tools (`jack_*` except `jack_control`) have moved from the `jack2` package to `jack-example-tools`
- The `waagent` service does provisioning now
- The `matrix-synapse` package & module have undergone some significant internal changes, for most setups no intervention is needed, though:
- The option [`services.matrix-synapse.package`](#opt-services.matrix-synapse.package) is now read-only. For modifying the package, use an overlay which modifies `matrix-synapse-unwrapped` instead. More on that below.
- The `enableSystemd` & `enableRedis` arguments have been removed and `matrix-synapse` has been renamed to `matrix-synapse-unwrapped`. Also, several optional dependencies (such as `psycopg2` or `authlib`) have been removed.