Are there any plans to add support for PostgreSQL support?
We do not have a plugin specifically for PostgreSQL,nor do we hear frequent requests for it.
PostgreSQL has excellent rollback ability in itself, using Write-Ahead-Logging, so consistency is not such a concern as it is in other types of databases.
See http://www.dbexperts.net/postgresql/integrityfor more details.
PostgreSQL can easily be restored using our software withoutthe need for a sync-lock-freeze-snapshot-release process like we do with other SQL databases.