From the announcement:
Since we first started our console journey with Wii U, we’ve always felt that Elliot Quest was the most at home on Nintendo systems. It’s been a long road getting here, including the work of rebuilding the original HTML5 game in C++. And to celebrate, we’ve made a few additions to the game, including a fast teleport system and an easy mode!
A Nintendo 3DS patch is also releasing today, which includes the same content updates!