This is better though? There are realistically no improvements to be made to Mario Kart which would require a new version of the game. Instead of buying a new game with less than 48 tracks for $60, we get to pay only $25 for 48.
How is this useless information? It's a giant deviation from the policies of other console-makers.
Screw them for confirming the release date after it had been delayed once, right?