* The Ceph LZ4 compression plugin is now enabled by default, and introduces
a new build depdendency.
+
+* Monitors will now prune on-disk full maps if the number of maps grows above
+ a certain number (mon_osdmap_full_prune_min, default: 10000), thus
+ preventing unbounded growth of the monitor data store. This feature is
+ enabled by default, and can be disabled by setting
+ `mon_osdmap_full_prune_enabled` to false.
+
+* Bootstrap auth keys will now be generated automatically on a fresh
+ deployment; these keys will also be generated, if missing, during upgrade.