Release Notes: storeBackup can validate your backup via checksums. With storeBackupCheckSource.pl, it can also validate unchanged files in the source directory against checksums in the backup to recognize e.g. bit rot. RC2 also includes some bugfixes.
Release Notes: New functionality: estimation if compression will make sense; offline backups without access to central backup repository (isolated mode); replication of backups, which lets you generate an unlimited number of (time shifted) replicas of your backup(s). Some bugfixes.