This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Seam is designed to work with the Java EE platform, not RCP. I'm sure there are people who are trying to extend Seam's reach into other areas such as RCP, but that is not its primary focus. Thus, you won't find it in the book, as you have observed.