This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
I don't exactly understand what you mean. Are you asking if there will be questions asking about differences between Java versions? LIke, you wanna know if things like "Which version of Java has Generics added? ". No, the xam does NOT have those kind of questions.
But SCJA has some questions like enhanced for loop etc which are new to Java 1.5 release. So learn the generics, enhanced for loops etc etc. HTH.