I just took the portable service re-certification test, and about half the config questions (6 or 7 questions) were on the iBook (Early 2004) model. Which hasn't been released. Nor have the service manuals.
I guessed my way through that part of the test using the iBook (Early 2003) as my guide. It's the only part of the test I didn't do well on (but I did pass).
So, was it a typo or a leak?
Sorry, can't guess the specs from the questions, but I have been trying!