vSphere Replication 8.5 is fully compatible with SRM 8.8. However, note the following:
To prevent multi-tenant cluster degradation or out-of-memory errors on management nodes, strictly observe the maximum configuration thresholds assigned to version 8.5. Operational Metric Maximum Limit Engineering Constraint Notes Combined sum across all target replication servers. Max VMs per Replication Server Strict limit for both embedded or additional servers. Max Extra Replication Servers 9 Add-on Servers Deployed as secondary helper appliances for load balancing. Recovery Point Objective (RPO) 15 mins to 24 hours vsphere replication 8.5 release notes
Key highlights of vSphere Replication 8.5 include: vSphere Replication 8