New release for iSCSI-R3 will have BlockIO. Please be patient all updates follow DSS. The reason is that once DSS is completed then the iSCSI-R3 and NAS-R3 follows, as the R-3 family is DSS combined. We hope to have this ready next week.
Please remember that if you have iSCSI Logical Volumes in pre-release and you want to use the new version that is blockIO, you will need to create new iSCSI Logical Volumes and delete the existing iSCSI volumes.
Also for Replication as well you cannot have mixed versions for replication.