This morning I tried (unsucessfully) to enable wi-fi calling on my iPhone 6 running iOS 9.0.1 (and yes Apple calls it wi-fi in phone settings and wifi everywhere else. Usually I get a screen saying it is "not yet available in my area." This morning I got a new screen saying it would be "available soon." Of course At&t using the word "soon" is something like a 2,000 year old organization like the Catholic church using the word "soon". It could mean some time in the next few hundred years. This time I'm hoping it means some time in the next few weeks.