My money's on the cartoon being the only thing they put on there...partially because it's the only element that was done on film and therefore would be available to scan in hi-res for this release, and partially because that's the only thing in the Special that Lucasfilm has admitted isn't half bad.
Of course, if they dropped in a clip or two from, say, the Falcon cockpit scene, I'd be over the moon.
I'll get right to work on that "originalholidayspecial.com" domain... ;)
--SKot