Blowing out the 30th anniversary with evil levels and a new Amiibo. UPDATE: Online sharing and some on-disc levels!
A developer spotlight during the Nintendo Digital Event confirmed some new features for Super Mario Maker.
The game will support "compatible Amiibos" with the Mystery Mushroom item that turns Mario into the Amiibo character. During the video, Luigi, Marth, Link, Yoshi and the Wii Fit Trainer were shown.
A special booklet will be available with sample levels generated by passcodes. The rumored 30th anniversary Mario, a larger than normal Amiibo, will generate a super-sized Mario in the game.
Super Mario Maker will release on September 11, 2015.
UPDATE: On Treehouse Live, it was announced that players will be able to edit downloaded levels but will not be able to upload their edits. Also, the four levels used in the grand finals of the 2015 Nintendo World Championships will be included on disc, so you can try and pull a John Numbers.