Graphically like always the improve is little by little, this year I didn't noticed big changes there.
I only play The Road mode, here usually they only change the story and few elite things but this year at least in this mode I notice better changes.
The one I liked more emotions when you commit an error or just misses a good pitch you see immediately changes in your character skills, negative or positive. And also if you missis a lot the ball well your character i'll be less and less confident. They added relationships bar between players too I thing that was interesting.
If you are like me that plays the show every year well I think you will like this year game better that the 19'.