Nintendo is currently overhauling the Animal Crossing site. It is currently being edited and a lot of new placeholders for News and Video pages. This is leading to speculation of a new game.
XtraLife, a spanish game retailer has put a listing on their website for Crash Bandicoot: N Sane Trilogy for the Nintendo Switch. They have listed it saying it is coming out this year and possibly being announced at E3. Eurogamer has previously said that it has heard from different sources that the game is in development.