This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I'm working on a ejb-jar.xml file using Eclipse. Pressing Ctrl+Space should pop up a list with the available xml tags. Strangely enough this feature doesn't work currently. I have also got a persistence.xml where autocompletion does work!