The Program Manager in Outlook (Melissa) and one of our Program Managers here in Project (Jon) collaborated on a post explaining the integration between Project Server and Outlook in this release. These posts go into nice detail about how you can manage your tasks directly from Outlook. This is an especially important feature for team members, whom most likely don't have access to Project Professional. The post is broken down into 2 parts:
Hope this will help you understand the integration between the 2 applications.