All kinds of stuff.
On the left side of it, inside the center "dial", is a duplicate MPH readout, same as the old car had, and the fuel gauge which is now completely digital. Cruise control lights are also in there.
On the right side is various information screens that you can switch through with the steering wheel buttons.
First set that you can scroll through are instant MPG, average MPG, miles to empty, trip odometer, etc. Also three readouts for battery voltage, oil and water temperature.
Second set is performance screens, a G-Meter (slow), a "Dyno" readout which you see in the picture above (Hey, that power dip is still there...) with a line that moves based on throttle input, and a timer.
Third set is various options, including setting the rev light, startup screen, and reseting the fuel averages. I believe it also allows you to receive text messages although I have not tested this yet.
Odometer and outside temperature are always displayed at the bottom.