McLaren have decided to continue to develop its MP4-24 in a little more conservative way as previous highly anticipated updates did not pay off. At the Nürburgring one of the new aerodynamic things was a revised front wing endplate which now includes small vents that catch air flowing along the outside of the wing towards the inside. The idea was pioneered by Toyota but has since March found many more followers.
Additionally, the team also reverted to its more traditional front wheel fairings. As marked in the image, the fairing is identical to last year's version and does not overlap the sidewall of the tyre - like the inside panel still does.
It needs no explanation that the front wing endplates highly influences the airflow around the front wheel, hence requiring continuous evaluation in that area.