Interesting. Came home, noticed the new firmware was released. Look at firmware, was old version. Plugged them in, near iPhone, had new firmware about a minute later. Haven't seen that before.
Now, it "feels" like noise cancellation has increased. But, there is zero function between transparency and adaptive. That's weird. I never use them, ever, but thought I'd test them out with this update. Once upon a time I seem to recall they actually made a difference.
Have you tried adjusting the slider? I turned it all the way to the left and now it's closer to noise cancellation. They need a few more notches in between.