Rook has released a good one: https://blog.rook.io/rook-v1-17-storage-enhancements-5eb9a6abd1ea
Especially interesting for me is the ability to specify a bucket owner for a new OBC instead of having Rook create a new S3 uder for each OBC.
Also interesting: MONs behind a k8s service. This could be interesting to avoid hardcoded IPs in my Ceph client configs, making MON relocations a lot simpler.