Diesel-electrics have now a more realistic eight-notch throttle, just like real locomotives.
Increase throttle = T
Decrease throttle = G
Dynamic brake simulation is much better. It no longer uses thrusters and the brake resistors have thermals. The resistors can overheat, burn and explode, especially without the cooling fans.
The ammeter actually works
The coupler 3D model is now a LOT better compared to the old one.