According to this video, and unless my unslept eyes are tricking me, iQuiz has been replaced with "Maze". But iQuiz is cool and allows you to create custom quizzes to brain-train (a bit of Perl can throw out a huge mental arithmetic quiz for example) while you're on the train!
Apple are really emphasising the "iPod is good for games" thing, mainly on the Touch of course, but I don't want it to be to the detriment of (my) education.
Oh trust me the new nano is going to have tons of games pushed on it. Thats why it has the acclerometer and still has the clickwheel. Games are going to be made to utilize both.