If you have MSDN or TechNet Subscription,you can download the product from http://technet.microsoft.com/en-us/subscriptions/ms772428.aspx
- Upgrade from Sp1 Beta is only supported for TAP customers who installed RC.t
- Non-TAP customers will only be able to upgrade from DPM 2012 RTM (+ qfe’s) to DPM 2012 SP1 RTM.
- There is no upgrade path from BETA Sp1 to RTM Sp1, you must reinstall DPM 2012 RTM, then upgrade to SP1 RTM.
To know more about What's new in SCCM 2012 SP1 http://technet.microsoft.com/en-us/library/jj591552.aspx