One of the primary themes for our 0.4 release was governance and how we can support common governance capabilities at both design-time and runtime. Governance is an incredibly broad domain, so we started with the basics. In the case of design-time governance, this meant exploring the workflow and capabilities a user might want for interacting with a service repository. The details are covered in the docs, but I find that seeing things in action is the best way to learn. I have created a screencast based on our Repository Integration example, so if you like to see before you do, then here ya go.
BTW, I recommend watching the video in HD full-screen vs. embedded. Both flavors included below.