I went to the BMW Store here in Vancouver, BC complaining about the turbo wastegate rattle and manage to get the shop foreman to test the car. He agreed that there was an issue.
I then showed him the service bulletin, and to make a long story short, he called someone from the warranty department (I am not sure if it was BMW Canada) to see if the turbo replacement can be done for free. He hasn't been given a definite answer yet so he said he will get the SA to give me a call when he gets an answer. I'm crossing my fingers I get good news but I probably won't