As you’ve already heard, Nintendo is releasing a massive DLC for New Super Mario Bros. U with the release of Super Luigi U.
Players who download the game on release (in Japan) will also enable Pro Controller support.
Iwata announced this news on Twitter, letting gamers know that if they download the Luigi U DLC they’ll also enable Pro Controller support for the full game.
This is only confirmed for Japan, it’s not sure if America and Europe will also receive this update.

