I have taken two screen captures from the most recent video posted
HERE.
It appears to me that the visible underbelly of the muffler is no longer seen. I can barely make some of the muffler out in the first pic, just past the rear bumper, but nowhere close to what it was before.
Has BMW been listening to us? I sure hope so. This would make me extremely happy.
See for yourself below. And damn those 19s look huge in the bottom picture!
edit: I don't know, the more I look at it, the more I can still see it. Just looks less noticeable though.