|Left: New Front Wing Right: Old Front Wing|
The new front wing features a new upper flap (highlighted) that now makes it a 4-element wing close to the pylons. The new flaps work mostly to provide the rest of the car with better airflow thus increasing overall downforce and maybe to produce a little bit more downforce itself.
The new slot (highlighted) make the wing a 5-element wing close to the endplates. The new slot will allow them to run a higher AoA (angle of attack) as it will help the airflow stay attached without the wing stalling. This 5-element configuration was used by ferrari since the beginning of the season and Red Bull are the first to use a similar configuration.
All of the drawing are a property of technicalf1explained.blogspot.com