The recommended books/tutorials to cover the objectives for this exam are:
1. Mastering EJB 3.0 by Rima Patel Sriganesh, Gerald Brose, Micah Silverman.
2. Java EE 5.0 tutorial
And of course the specs .. the list of them is mentioned here.
Register early as there is a limit to the number of people who can take the free beta exam.