This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
These topics are still covered in the Servlet 3.0 specs, so I guess it is still good to learn. Whether it is part of the EE6 exam I am not sure, as I am also not sure if the book of Charles Lyon covers all the exam topics.