Angry Sun files found in Super Mario Maker through data mining (DLC?), other bits

[RPGFan1]

AbbathTheGrim said:

pokoko said:
On-disc DLC? That would be one of the most awesome things to happen on these forums in quite awhile.

I am no developer but maybe this could be preparing the game for DLC? Perhaps? If it indeed has anything to do with dlc at all of course.

If it is on-disc DLC then there won't be enough popcorn around to deal with what's coming.

For what.  It's on a Nintendo game.  They'll just brush it off like they with Splatoon.