I attended part of the Best of Microsoft Management Summit 2011 recently hosted in Cape Town. The presentation "SCVMM 2012 : What's in it, and how it enables the Building Clouds" was really good and informative. This is a significantly different application stack compared to the current SCVMM It show a definite shift from using virtual machines to using private clouds based on virtual machines. They also have a big push for "application services" for the cloud.
Importantly they mentioned the guided evaluation program available when you download the SCVMM 2012 Beta. This is to not only inform but also guide through the new concepts and featured available in the new release.
Here are the key links for the beta and guided evaluation.