The MLB app was updated on opening day (yesterday) to show live games with their new 3D implementation of Gameday. It has this cool 3D view of home plate with the strike zone displayed as a color rectangle above it. When a pitch is thrown in the game, it shows where it crossed the plate in 3D and if it was called a strike, it will be marked red. But you can see if it is actually out of the strike zone and the umpire just missed the call.
There are also stats to the left and right of the video. You can also switch from the home plate view to another view that shows the defensive alignment of players. When they shift positions it shows the icons with the players number in a circle moving on the virtual field.
It is pretty glitchy, but hopefully this will get better over the season.