The Sauber C30 underwent a face-lift at the Spanish GP as several different updates were added to the car. One of those is the new turning vane combination, attached to the bottom of the nose cone. The new version has one smaller vane outside of the nose cone, with another one behind it, positioned a little more inward.
The newer design provides the car with better front airflow management in combination with its all new front wing. By placing the second vane more inward, more air is pulled from under the nosecone towards the sides, reducing static pressure on the splitter.