what changes to facelift Fiesta?

…I’m interested in the current Fiesta, but I can’t find any more detailed information about Facelift/Fiesta. So far I’ve found out that the following things have been “changed”: -higher interior materials -new headlights front/back -new radios -more Equipment options But much more interesting to know is what Ford has done about childhood diseases, especially chassis/car body/safety/motor/electrics etc.. Does anyone have more detailed information about this? Will there ever be ESP for the smaller petrol engines?