Though Nintendo's main focus for this year's E3 was The Legend of Zelda: Breath of the Wild, they still had some announcements ready for Mario and friends.
* Mario Party Star Rush
was announced for Nintendo 3DS. This party starts in Europe on October 7, and in North America on November 4.
* Announced earlier this year, Paper Mario: Color Splash
now has a release date set for October 7 in both North America and Europe.
* The Super Mario series of amiibo will soon expand to include Boo, Daisy, Diddy Kong, Donkey Kong, Rosalina, Waluigi, and Wario. All seven will launch in North America on November 4. In Europe, four of them (Boo, Donkey Kong, Rosalina, and Wario) will launch on October 7, followed by the other three (Daisy, Diddy Kong, and Waluigi) on November 4.
Link: Nintendo @ E3 2016