Did you notice the reference in the DPM V2 Product Information FAQ to support for Continuous Cluster Replication (CCR)? I knew it was an Exchange 2007 feature but not much else, and had to do some poking around. I found a great blog post about CCR back in July and clipped it so I could share it when the time came that I could start talking about V2.
For a great explanation of CCR and how it works, take a look at Exchange 2007 Cluster Continuous Replication (CCR) by Scott Schnoll. Enjoy!