First, there will be the Async then sync will come. Yes, we want to be able to fail back in the easiest possible manner. I don't think Snapshot replication will be part of the first drop.   Please contact me in PM so we can discuss the use-cases.
Does the current version of CSI driver support ASYNC /SYNC replication One of the customers looking for this feature like the cinder driver for openstack that supports repilcation for LUNS .
Does the current version of CSI driver support Async/SYNC replication