Just a note, when my autobiography gets turned into a movie, I want this theme playing as I drive off into the sunset in one of those ludicrously big American 50s cars. Thanks to the composer on Digimon World Next Order for sorting that out!
That aside, check out the new gameplay clips. It starts with a run around the environments we've already seen, with the whole day/night thing. But then, it bursts into some battle action (the first clips of these I recall seeing) - with all kinds of Digimon popping up to help combat the google-eyed nasties.