Alright, from what I've seen:
The Mario Figure has small LCD screens, similar to a Mindstorms box but in color, and it's too small to be a Switch dock from what some people are speculating.
The figure looks to be 5 studs wide, and there's a button on the bottom, possibly the LEGO logo that you can press to change what happens on the screens?
2 1x1 round titles, both in yellow and peach, are on the figure, meaning you can build stuff on Mario. (Anyone wanna give him earrings? )
Figure's hands looks like he can hold stuff. Maybe power-ups are included in the set, and that's what the blind bags are?
There's two 1x2 brown bricks with a jumper plate, along with a printed brick on top of a 2x2 round plate with a tile, all on a 2x6 brown plate.
EDIT: Also found that Mario's eyes are doing the > < expression.