I don’t have one of the new iPod classics, but I’m hearing from people that do that it will now automatically play the next podcast in the list when one is finished. This is great! Unfortunately, the iPod can only order podcasts from newest to oldest, so you can only listen continuously in reverse order. This make the new feature useless.
Not that it matters because I’m sure that this new feature will never be introduced to pre-classic iPods, since Apple tends to completely abandon previous generations with regard to feature updates. Even Microsoft manages to do the right thing in this regard.