The two most exciting iPad features of iOS 9 to me were split/screen and picture in picture, and the number of major apps still not supporting these features a week after iOS 9 came out is ridiculous. Of all the major apps I use the only one updated for these features so far is Twitter. Apps like Facebook, Youtube, CNN, Watch ESPN, HBO Go, Netflix, Twitch, etc. None of them are updated, and keep in mind developers have had access to these features in their development kits for months now. They didn't just get iOS 9 last week, like everyone else. I don't understand what the hold up is.