After a mysterious announcement on their social profiles on February 12th, McLaren shared the first pictures of their new MCL39 this morning, as the car hit the track at Silverstone for the 200 km shakedown. Despite the camouflage livery and the very few pictures available, it was possible to appreciate a huge amount of changes, concerning both the aerodynamics as well as the mechanical side of it. GPBlog will try to analyse them all.