This new feature adds some work for your replicas. Veeam already had SureBackup but with the upcoming release they add SureReplica and even more! Veeam clearly thinks out of the box with this. People asked for SureReplica which would be the same function as SureBackup and so Veeam made this possible in version 7. Veeam is now even bringing all the powerful capabilities of Virtual Labs for backup (SureBackup, U-AI and even On-Demand-Sandbox) to replicas too. This means no more idle replicas, use them!
As with every announcement they already released a video explaining the feature: