My story is similar to ddruz's. When we first got the car over a year ago, it was pretty quiet. But the pano roof slowly seemed to get more and more creaks. They were mostly when it was hot. It wasn't really loud, but you definitely noticed it, and it happened a lot.
About four months ago, I took the car in to get the cubby installed. I asked them to look at the pano roof at the same time. They followed the then-current bulletin. It was different when we got it back...but I'm not sure it was better. It seemed to creak mostly when cold, instead of when hot. Again, not loud - but at times fairly constant.
Three weeks ago we took it in for its one-year service, and I asked if there were any pano updates. I was told there was a new bulletin for the pano, and more important a c-pillar brightwork bulletin that fixes noises that appear to come from the pano.
Wow, what a difference. The car is silent now!