One thing I've noticed about the cornering light, (I'm talking about the small seperate LED one that lights up when you reach a junction and turn right or left into it, not the one that used the main Bi-xenon headlight and follows the curve of the road as you steer on a twisty road) they won't light up when you just start up the car and turn the steering wheel at standstill, even if you put the transmission into D. It seems that you first have to drive forwards a bit then when you turn the steering wheel they will activate and shine down the direction you are turning.
For further clarification, I've attached a picture of the cornering light I am talking about.
This system should be the same on the new GL as well.