Well, SCWCD 1.3 covered the J2EE 1.3 spec, just as SCWCD 1.4 covers the J2EE 1.4 spec. (I upgraded because I'm bringing everything up to date, not because there's anything really substantially new about it.)
I imagine that Sun will update the exams to the
Java EE 5 standard when it's out next year, but that's going to be a few months off at least, plenty of time to worry about learning it. They'll announce it when they decide.