There is some high level stuff
Project Server 2010
Project Server 2010 This article discusses planning considerations that a SharePoint farm administrator should make when planning to deploy Microsoft Project Server 2010. Project Server 2010 is built on Microsoft SharePoint Server 2010 architecture and has a big dependency on SharePoint Server 2010 features and services. This article describes the following considerations: Microsoft Enterprise Project …
SharePoint 2010
Here’s a very useful comparison tool for the current versions of SharePoint 2010: http://sharepoint.microsoft.com/en-us/buy/Pages/Editions-Comparison.aspx