This is subject to change in features release - CTP.

Data Protection Manager (DPM) introduces the new features and enhancements in this version. 

Improved backup performance of Windows Server 2012 Hyper-V over CSV 2.0 deployments Cluster Shared Volumes (CSVs) provide a distributed file access solution so that multiple nodes in the cluster can simultaneously access the same NTFS file system.In System Center 2012 Service Pack 1 (SP1) DPM, CSV 2.0 support allows the following benefits:

• 90% improvement in
  expressful backups.
• Parallel backups.
• No performance
  difference between backups from owner and non-owner nodes.
• Support for SMB
  shares

• Protect Hyper-V
  over remote SMB share

In Windows Server 2012, you can now
use SMB file shares as remote storage for Hyper-V. With this new capability, Hyper-V can store virtual machine files, which includes configuration, virtual hard disk (VHD) files, and snapshots, on SMB file shares. This offers benefits like Ease of provisioning and management, increased flexibility, ability to take advantage of existing investment in a converged network, reduced Capital.
expenditures, and reduced operating expenditures.

In System Center 2012 Service Pack 1
(SP1) DPM, SMB shares support allows the following benefits:

• More efficient
  expressful backups.
• Continued
  protection even after Live Migration.
• Support for SMB
  shares in standalone and scaled-out deployments.
• Protect Windows 8
  deduplicated volumes

Data deduplication involves finding and
removing duplication within data without compromising its fidelity or
integrity. DPM allows optimized back of deduplicated volumes, both locally and
over the network.

• Support for Live
  Migration

Live migration is a Hyper-V feature in Windows Server that allows you to transparently move running virtual machines from one node of the failover cluster to another node in the same cluster or another cluster without a dropped network connection or perceived downtime.

In System Center 2012 Service Pack 1 (SP1) DPM, Live Migration support allows the following benefits:

• Uninterrupted protection
  for migrated virtual machines.
• Support for
  inter-cluster, cluster to standalone, and standalone to cluster migrations
  apart from intra-cluster migration.
• Support for SMB
  shares.
• Use SQL
  Server 2012 to host DPM database